# SentiaRead — Comprehensive AI English Reading & Acquisition Manual > Learn English naturally through content you love. An AI-powered English reader for books, articles, and podcasts. Instant in-context definitions, complex sentence breakdowns, and cross-device sync on iOS, Android, E-Ink, Mac, Windows, and Chrome. ## Product Overview & Philosophy SentiaRead is a contextual English reading and vocabulary acquisition system designed to eliminate reading friction and build English thinking naturally. It combines in-context AI lookups, faithful sentence rewrites, quiet inline glosses, unified multi-format libraries (~71k+ public domain classics, EPUBs, PDFs, web clippings, and sentence-synced podcasts), and cross-device sync across iOS, Android, E-Ink (Onyx Boox), macOS, Windows, and Chrome extension. Core Philosophy: Reading & acquisition, not isolated flashcards or mechanical translation. Native language explanations serve as a safety net, while simple English explanations keep readers in the flow. ## Core Features Deep Dive ### [Vocabulary Builder](https://sentiaread.com/features/vocabulary-builder) *Tagline*: Build real vocabulary while you read Words you look up are saved together with the exact sentence you found them in. Every saved word is then automatically highlighted with contextual inline meanings whenever it appears again in your books, articles, or podcast transcripts. No deck-building drills — vocabulary grows naturally through repeated encounters in real reading. **Key Scenarios:** - **Save words with their original sentence in one tap**: Tap any word while reading to get a context-matched explanation, then tap once to save it. The original sentence is saved alongside the word automatically — no app-switching, no manual copying. - **Re-encounter saved words with quiet inline meanings**: Every saved word is automatically highlighted when it appears again across your library, with a concise inline meaning resting quietly above it. Understand it at a glance without ever having to look it up twice. - **Listen to hard-to-remember words on Word Radio**: Reviewing is no longer just staring at isolated flashcards. Each word returns inside its original scene. Put headphones on during your commute or walk, and Word Radio reads words, examples, and meanings hands-free. **How it differs from traditional flashcard apps:** - **No manual deck building — sentences save automatically**: Words come directly from your real reading, with their context sentences attached without extra effort. - **Review in real context rather than isolated cards**: You recall the moment and story where the word lived, instead of memorizing a generic list of definitions. - **Natural reinforcement through future reading**: Automatic highlights and inline meanings bring saved words back in every new text you open, creating a natural retention loop. **Frequently Asked Questions:** - Q: What do I actually hear on Word Radio? A: You decide how much audio plays with each word: English explanations, native explanations, example sentences, or simple repetitions. Words marked as mastered drop out of the rotation automatically. - Q: Which devices does it work on? A: iPhone, iPad, Android phones and tablets, Android e-ink devices, Mac, and Windows — plus a Chrome extension for reading web articles. - Q: What level of English does it support? A: Explanations adapt to your level, from CEFR A1 to C2. When an explanation is still challenging, one tap shows an explanation in your native language. - Q: Do highlights work in my own books? A: Yes. Import EPUB, PDF, web articles, and podcast transcripts — saved words are highlighted across everything in your library. ### [Vocabulary Review](https://sentiaread.com/features/vocabulary-review) *Tagline*: Review vocabulary in authentic context Break free from isolated flashcard rote memorization. SentiaRead weaves your due vocabulary into coherent, level-matched short stories so you review naturally inside real reading. Combined with the modern FSRS spaced repetition algorithm, original book quotes, multiple drill modes, and hands-free Word Radio, every word sticks in long-term memory. **Key Scenarios:** - **AI Reading Review: Activate words naturally inside coherent stories**: Instead of drilling isolated cards, AI gathers your due vocabulary and weaves it into an engaging, level-appropriate short passage (CEFR A1-C2). You meet the words inside a story; the sheet you open it from lists them first, so you know what to watch for. - **Modern FSRS Spaced Repetition & Multi-mode Drills**: Reviews come back just before a word fades. Each one arrives as fill-in-the-blank, multiple choice, recall, or meaning-to-word — picked for how well that word is holding, or narrowed to the modes you prefer — and every question carries the sentence you actually met the word in. - **Word Radio: Hands-free listening review on the go**: Put on headphones during your commute or walk and turn your word list into an audio station. Word Radio reads aloud pronunciations, explanations, and authentic context sentences. Mastered words drop out automatically, maximizing efficiency with zero screen time. **How it differs from traditional flashcard and rote memorization apps:** - **AI reading review in coherent stories instead of isolated cards**: Words are remembered within the vivid narrative of a freshly generated story, connecting semantic cues naturally rather than forcing disconnected dictionary definitions. - **Modern FSRS algorithm combined with authentic book sentences**: FSRS models memory stability and difficulty with far higher precision than legacy SM-2 (Anki), while original book occurrences serve as personal retrieval cues. - **Multimodal synergy: visual reading, interactive drills, and audio radio**: Review seamlessly across multiple sensory modalities — reading passages on your tablet or e-ink device, testing recall with interactive cards, and listening hands-free on Word Radio. **Frequently Asked Questions:** - Q: How does AI Reading Review generate passages? A: SentiaRead selects a batch of words scheduled for review and uses AI to craft a cohesive, natural short passage adapted to your CEFR proficiency. The target words are woven naturally into the narrative, allowing you to reactivate vocabulary through enjoyable reading. - Q: What is the FSRS algorithm and why is it superior to SM-2 (Anki)? A: FSRS (Free Spaced Repetition Scheduler) is a modern open-source scheduler built on memory-retention research. It fits how a particular word is holding up for you, rather than applying one fixed interval curve to everyone, so the words you already know come back less often and the shaky ones come back sooner. - Q: Where do the review sentences come from? A: Review cards prioritize the exact book, article, or podcast sentence where you originally saved the word. Re-encountering the original scene provides powerful autobiographical memory cues that make recall effortless. - Q: Can I customize what Word Radio plays and choose audio accents? A: Yes. You can choose what each turn plays (the word, its English definition, the native gloss, the sentence from your book), shuffle the order and set the playback speed. Mark a word 掌握 while listening and it drops out of the next round. ### [E-Ink Reading](https://sentiaread.com/features/e-ink-reader) *Tagline*: The English learning reader built for e-ink SentiaRead is tailored for Android e-ink devices like Onyx Boox: pure black-and-white high-contrast rendering, physical page-turn key support, and refresh-friendly typography. Look up words in place for contextual explanations, save them to your synced vocabulary list, and enjoy distraction-free reading on paper-like screens. **Key Scenarios:** - **Pure black-and-white high-contrast typography, zero ghosting**: A theme designed specifically for electronic paper: no low-contrast greys, no animation-heavy transitions that smear on slow refresh rates. Just crisp, sharp typography on a paper-like page. - **Turn pages with real physical buttons, not screen taps**: Flip pages effortlessly using your device's physical buttons or volume keys, restoring the tactile feel of an e-reader. Tap targets are enlarged for slower screens, so nothing relies on delicate gestures. - **Immersive reading on e-ink, seamless review across all devices**: Words and sentences saved on your e-ink reader automatically sync to your iPhone, Mac, and Windows apps. Listen to Word Radio during your daytime commute, and return to paper-like reading at night. **How it differs from stock e-readers:** - **Contextual explanations tailored to your level**: Not a generic dictionary dump — AI explains the exact sense used in this sentence, matched to your reading level. - **Synced vocabulary that follows you across all devices**: Saved words remain highlighted in future reading on every device you use, rather than trapped on a single gadget. - **Read your own content without closed store walls**: EPUBs, PDFs, saved web articles, and podcast transcripts all live in one open, personal library. **Frequently Asked Questions:** - Q: Which e-ink devices are supported? A: Android-based e-ink devices, such as the Onyx Boox series. Install from Google Play, or download the official APK directly. - Q: Do AI lookups work on e-ink? A: Yes — the same in-context explanations as on mobile and desktop. AI lookups require an internet connection, while reading downloaded books is fully offline. - Q: Does my reading progress sync with other devices? A: Reading progress, highlights, and vocabulary sync across e-ink, iPhone, iPad, Android, Mac, and Windows seamlessly. - Q: Why read English on e-ink instead of a phone? A: An e-ink page is the closest medium to paper: zero glare, zero notification distractions, and a calm rhythm suited for deep reading. SentiaRead layers on effortless language help and natural vocabulary reinforcement. ### [AI Dictionary](https://sentiaread.com/features/ai-dictionary) *Tagline*: Make word lookups fit the exact context Stop guessing your way through a long list of dictionary definitions. SentiaRead analyzes the full context of what you are reading and delivers the single exact meaning in plain, accessible English, with native explanations always on hand. Stay immersed in English reading without the constant friction of looking up words. **Key Scenarios:** - **The single exact meaning in context, without breaking your flow**: Traditional dictionaries list multiple definitions for words like "run", "tip", or "address", leaving you to pause reading and figure out which one fits the sentence. SentiaRead in-context lookup analyzes the full sentence, surfacing the single exact meaning right on the page. Read it, grasp it, and keep going without moving your eyes away. - **Know every word, but the sentence still makes no sense?**: Idioms and expressions rarely equal the sum of their individual words. Select a phrase like "on the fence" or "cut corners" — the AI explains the author's figurative meaning in context instead of giving mechanical word-by-word definitions. - **Understand words in simple English, build true language intuition**: Say goodbye to obscure dictionaries that define unfamiliar words with even harder vocabulary. SentiaRead analyzes the sentence context and explains words in clear, accessible English, keeping you immersed in the flow of reading. If an explanation is still hard to grasp, check the native explanation anytime for effortless clarity. **How it differs from traditional dictionaries and translators:** - **The exact meaning for this sentence, no sorting through lists**: Traditional dictionaries leave you to sift through multiple definitions. SentiaRead looks at the full sentence and surfaces only the single meaning the author intended. - **Simple English that clarifies, rather than harder words to decode**: Standard English-English dictionaries often explain unfamiliar words with even harder vocabulary. SentiaRead adapts definitions to your level, so meaning clicks instantly. - **Stay immersed in English instead of skimming translations**: Full-page translation makes it easy to lean on your native language and ignore the English. Contextual English explanations with on-demand native support keep your brain actively learning. **Frequently Asked Questions:** - Q: How accurate is the AI when dealing with polysemy or technical terms? A: Unlike static dictionaries that treat words in isolation, SentiaRead analyzes the surrounding paragraph and chapter context. Whether it is literary metaphor, domain-specific terminology, or colloquial slang, it captures the author's intended nuance. - Q: Why prioritize simplified English over immediate native explanations? A: Relying entirely on native-language explanations trains your brain to read in your mother tongue instead of English. Simple English explanations keep you in the English flow, while native explanations serve as a reassuring safety net — the core principle of comprehensible input (i+1). - Q: Does looking up words obstruct the surrounding text? A: No. In-context lookup provides compact in-place overlays and quiet inline meanings resting right above the words. Explanations are kept concise (2–3 lines) so you can absorb the meaning at a glance without losing your reading position or switching apps. - Q: Does dictionary lookup work offline? A: No. Because SentiaRead performs real-time AI analysis on the surrounding sentence and paragraph context, lookups require an internet connection. However, books already downloaded to your device remain completely readable offline. ### [Sentence Simplifier](https://sentiaread.com/features/sentence-simplifier) *Tagline*: Make complex sentences effortless to read Get stuck on a tangled sentence you've read three times? SentiaRead faithfully rewrites it into clearer, plainer English while keeping all original details and logic. Laid out in clear thought groups, with native explanations always one tap away. Works across English books, PDFs, saved web articles, and podcast transcripts with full cross-device sync. **Key Scenarios:** - **Know every word, but the sentence still makes no sense?**: Select the sentence and read the AI rewrite first: keeping every detail and nuance, but restructured into clear, accessible English. Once the sentence structure clicks, head back to the original — it reads effortlessly. - **Master deeply nested sentences in papers and classic novels**: When faced with nested clauses, inversions, or lengthy academic sentences, AI breaks them down into clear thought groups. See the core subject-verb-object backbone and modifiers at a glance, without guessing. - **Confirm your understanding with native explanations and save key phrases**: After reading the simpler English rewrite, easily verify your interpretation against the translation below. Key expressions worth remembering are highlighted so you can add them to your notebook with one tap for spaced reinforcement. **How it differs from traditional translation tools:** - **Think in English instead of jumping straight to translations**: The rewrite stays in English. Instead of relying on full-text machine translations that leave no English impression, you untangle the meaning in simpler English and keep your reading immersion intact. - **Full meaning preserved — no summaries or lost details**: A faithful restatement that untangles sentence structure without cutting corners. No modifiers or logical connections quietly disappear for the sake of brevity. - **Untangle sentences in place without breaking your reading flow**: Triggered right on the sentence that stopped you on the page, without copying and pasting into another app. Read, understand, and continue reading without friction. **Frequently Asked Questions:** - Q: Is the rewrite a summary or condensation? A: No. SentiaRead provides a faithful restatement of the original sentence, untangling complex grammar into clear, simpler English while preserving all nuances, modifiers, and logical connections. Summaries cut content; rewrites do not. - Q: Can I also check the native translation? A: Yes. Simple English rewrites are shown by default to cultivate English thinking, but a complete native translation is always provided right below for quick verification whenever needed. - Q: What are thought groups? A: Thought groups segment a long sentence into natural semantic chunks (core clauses, modifiers, prepositional phrases) just like a fluent reader parses text. Visualizing the structure makes complex sentences instantly readable. - Q: Does it work in PDFs and imported web articles? A: Yes — on everything in your library: EPUB books, PDF documents, saved web articles, TXT / Markdown files, and podcast transcripts. ### [EPUB Reading](https://sentiaread.com/features/epub-reader) *Tagline*: Read English originals with effortless clarity SentiaRead lets you read your own EPUBs alongside PDFs, saved web articles, and podcast transcripts in one unified, beautifully formatted library. Tap any word to see its exact contextual meaning without ever leaving the page. Saved vocabulary stays highlighted across your entire book collection, with reading progress synced seamlessly across all devices. **Key Scenarios:** - **Start a curated original book today, or bring your own library**: No setup required. The app comes preloaded with accessible classic reads like The Weekend. Bringing your own books is just as seamless: import any EPUB or PDF and it lives side by side with your saved articles and podcast transcripts on one bookshelf. - **In-place lookups that never break your story momentum**: Reading novels requires immersion. Look up unfamiliar words on the spot without jumping to external dictionary apps or losing your place on the page. Clean book typography and persistent reading position keep your evening of reading smooth and uninterrupted. - **Progress, highlights, and vocabulary synced across all devices**: Read the same book on iPhone, iPad, Android, e-ink devices, Mac, and Windows. Pick up where you left off instantly on any screen, and enjoy full offline reading after downloading. **How it differs from generic EPUB readers:** - **In-place explanations without app switching**: Contextual lookups happen directly on the active page, keeping your reading momentum and focus completely intact. - **Context-specific meaning instead of dictionary dumps**: AI explains the exact sense this sentence uses in plain, accessible language, rather than overwhelming you with a long list of dictionary entries. - **Connected vocabulary across your entire library**: Words you save keep getting highlighted in every subsequent book and article you open, on whichever device you read on. **Frequently Asked Questions:** - Q: Which ebook formats can I import? A: EPUB, PDF, TXT, and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported. Beyond books, saved web articles, podcasts, and YouTube transcripts all live together in your unified library. - Q: Can I read EPUBs I bought from a store? A: DRM-free EPUBs open normally. DRM-protected EPUBs cannot be opened, and neither can PDFs that are password-locked or pure scans. - Q: How do I get an EPUB into the app? A: On a computer, drag the file onto the window or use Import in the library. On phones and e-ink readers, open the file from your file manager and choose SentiaRead; on iPhone you can also share it from the Files app, AirDrop, or Mail. Sign in with the same account and a book imported on one device is readable on the others. - Q: What if I do not have an EPUB yet? A: The app already comes with a shelf of formatted books, including approachable originals like The Weekend, so you can open it and start reading before importing anything. ### [Public Domain Books](https://sentiaread.com/features/public-domain-books) *Tagline*: Find real English books without the hunt Search tens of thousands of free public-domain English books from Project Gutenberg, Standard Ebooks, Planet eBook, and Faded Page directly in the app. Tap any result to import the clean EPUB into your personal library in one tap, with full in-context AI lookup and vocabulary tracking. **Key Scenarios:** - **Search any classic title or author with zero guesswork**: Type the name of any famous novel or author to search across ~71,000+ indexed public-domain books. Clear metadata, covers, and source badges help you find the right edition without digging through messy file lists. - **Start on curated starter books, then grow into timeless classics**: Begin immediately with pre-typeset starter reads like The Weekend. When you are ready for more, explore classic literature by Jane Austen, Arthur Conan Doyle, and Mary Shelley — all living on the same shelf with synced progress. - **Browse trusted book sites in-app and import in one tap**: Explore Standard Ebooks, Loyal Books, or your own favorite ebook websites in the built-in browser. When a downloadable EPUB or PDF is detected, a floating Add to Library button appears for instant background import. **How it differs from hunting for ebook downloads:** - **Legitimate public domain sources, zero piracy risks**: All books originate from reputable, open-license archives like Project Gutenberg and Standard Ebooks. Clean text, no malware, and no copyright ambiguities. - **One-tap import into an active learning library**: Files are automatically parsed, formatted, and connected to your AI dictionary and vocabulary notebook, rather than stranded in a messy Downloads folder. - **Unified cross-site search and personal source support**: Search across major public-domain archives at once, or add custom book sites that sync seamlessly across iPhone, iPad, Android, e-ink, and desktop. **Frequently Asked Questions:** - Q: Are these public domain books completely free and legal to read? A: Yes. All indexed books are in the public domain or openly licensed in their source jurisdictions (such as Project Gutenberg and Standard Ebooks). You can freely search, download, and read them for personal study without paywalls or copyright infringements. - Q: Which book sources are built into SentiaRead? A: SentiaRead comes pre-configured with Project Gutenberg, Standard Ebooks, Global Grey, Planet eBook, Loyal Books, and Faded Page. Over 71,000 titles are directly indexed for instant in-app search, and you can also add your own custom websites. - Q: What file formats can be imported from websites? A: SentiaRead automatically detects and imports EPUB, PDF, TXT, and Markdown files. DRM-protected files and proprietary Kindle formats (MOBI/AZW3) are not supported. When multiple formats exist, the highest-quality EPUB is prioritized. - Q: Do imported public domain books support AI lookup and sync? A: Yes! Every imported book enjoys full platform features: in-context AI lookups, sentence simplifications, inline meanings, cross-book vocabulary highlights, and reading progress synced across all your devices. ### [Highlights & Notes](https://sentiaread.com/features/highlights-notes) *Tagline*: Keep highlights and notes organized across books SentiaRead lets you highlight sentences and write thoughts directly inside EPUBs, PDFs, web articles, and podcast transcripts without ever leaving the page. Each one is anchored to its exact chapter, paragraph and offset, so it stays put in the text; open the highlights list while reading and one tap takes you back to it. Your notebook gathers them all by book, and everything syncs across iPhone, iPad, Android, e-ink devices, Mac and Windows. **Key Scenarios:** - **In-place highlighting and note taking that keeps you in the flow**: Select any sentence while reading to highlight it with your favorite color theme or add a personal reflection on the spot. Clean book typography and uninterrupted focus ensure your immersion is never broken. - **A dedicated book notebook to revisit your best excerpts**: Highlights and personal reflections are aggregated into a clean, book-by-book notebook. Organized by chapter with progress indicators, you can revisit the most impactful ideas whenever inspiration strikes. - **Real-time cloud sync across all your phones, tablets, and computers**: Highlight on your phone during your morning commute, add reflections on your iPad or e-ink tablet in the evening, and organize research on your Mac or PC. Every annotation is instantly synced and preserved. **How it differs from screenshots and generic note apps:** - **Anchored to the sentence, not to a page number**: Every highlight records the chapter, paragraph block and offset it came from, so it survives a font change or a re-flow. While you are reading, the highlights list takes you back to any of them in one tap. - **Separated from AI dictionary & vocabulary lists**: Language learning lookups and book quotes stay in their own clean spaces, working together seamlessly without cluttering your thoughts. - **Built specifically for books and long-form reading**: No messy screenshot folders or copy-pasting into external note apps. A dedicated, distraction-free reading notebook synced across all devices. **Frequently Asked Questions:** - Q: Which content types can I highlight and annotate? A: You can highlight and take notes in imported EPUB books, PDFs, TXT files, saved web articles, and audio podcast transcripts. All notes across every format land in your unified notebook. - Q: How do I get back to where a highlight came from? A: Open the highlights list while the book is open and tap one — the page scrolls straight to that sentence. The anchor records chapter, paragraph block and offset, so it still finds the sentence after you change the font size or switch devices. The notebook is the other view: it gathers highlights across every book, organized by book and chapter. - Q: Can I export or copy my highlights and notes? A: Yes. You can copy individual highlights and notes with one tap, or copy an entire chapter’s annotations to paste into Notion, Obsidian, or your favorite note-taking workspace. - Q: Do highlights and notes work offline? A: Yes. All highlights and notes are saved locally first using high-speed on-device storage. When you reconnect to the internet, all edits automatically reconcile and sync to the cloud. ### [Read Aloud](https://sentiaread.com/features/read-aloud) *Tagline*: Listen and read English with sentence sync SentiaRead reads any text aloud in a natural neural voice, and plays EPUB3 Media Overlay audiobooks where a book ships with one. The sentence being spoken highlights as it goes. Tap a word to pause and see what it means here without losing your place, and pick the same sentence up on your other devices. **Key Scenarios:** - **Continuous natural neural read-aloud with sentence follow-highlight**: Listen to any imported EPUB book, PDF, saved web article, or podcast transcript. A neural voice reads with natural phrasing while the sentence being spoken highlights in step. Speed runs from 0.5x to 2.0x, with presets a tap away. - **Import EPUB3 audiobooks with authentic studio narration sync**: Read EPUB3 books with embedded Media Overlays to experience studio narration from native speakers. Words and sentences sync precisely with the narrator's voice, giving you the natural cadence, emotion, and nuance of a professionally produced audiobook. - **In-place lookups while listening, with cross-device audio sync**: Encounter an unfamiliar word while listening? Tap it anytime to pause and see its exact contextual meaning in place. Reading progress syncs across iPhone, iPad, Android, Mac, Windows and e-ink; audio position follows you across every device that plays audio. **How it differs from generic TTS apps and audio players:** - **Both high-quality neural TTS and native EPUB3 studio audiobooks**: Enjoy natural AI neural voices on any imported text or article, plus native support for EPUB3 audiobooks featuring professional human studio narration — tailored for both extensive listening and intensive study. - **Sentence-level sync highlights integrated with instant in-context AI lookup**: Visual highlights follow the spoken audio sentence by sentence. When something is unclear, tap in place to understand the exact meaning. Comprehensible listening transforms passive noise into real language acquisition. - **Cross-device cloud sync for reading progress and audio playback positions**: Start listening on your phone during your commute and pick up at the same sentence on your tablet or desktop at home — or carry on reading it on your e-ink reader. Progress, audio locators and saved vocabulary stay in sync. **Frequently Asked Questions:** - Q: What are EPUB3 Media Overlays audiobooks? A: EPUB3 Media Overlays is an open standard that binds audio recordings (such as human voice actor narration) to book text using SMIL synchronization. When you open a compatible EPUB3, SentiaRead highlights each sentence as the authentic narrator reads it. - Q: Can I listen with the screen off? A: EPUB3 audiobooks, yes — they keep playing with the screen locked or in another app, with controls on the lock screen and in the notification centre. Neural-voice read-aloud is different: it runs in the foreground and pauses when you leave the app, so it is built for reading along rather than for listening with the phone in your pocket. - Q: Can I adjust playback speed and switch voices? A: You can read in American or British English, and set the speed anywhere from 0.5x to 2.0x with presets for the usual ones. EPUB3 audiobooks change speed the same way, without distorting the pitch. - Q: What happens when I look up a word while listening? A: Tapping any word on the page automatically pauses playback and opens the in-context explanation card. Once you grasp the meaning, resume playback with a single tap from the exact same sentence. - Q: Do read-aloud and audiobooks work offline? A: EPUB3 audiobooks with bundled audio files play completely offline. For AI continuous neural TTS, downloaded book text is always available, while audio generation streams on demand over an internet connection. ### [Reading Tracker](https://sentiaread.com/features/reading-tracker) *Tagline*: Build a reading habit that grows day by day Set a gentle 10-minute daily goal and track your reading time, consecutive streaks, and reading score automatically as you turn pages. No Duolingo-style streak penalties — if you miss a day, your best streak record and total reading ledger stay intact. Glance at iOS and Android home screen widgets, and jump right back to where you left off in one tap. **Key Scenarios:** - **Daily 10-minute micro-goals that turn invisible progress into a tangible ledger**: Language acquisition feels slow because daily progress is invisible. Lower the barrier to entry with a 10-minute daily goal: reading 10 minutes a day adds up to over 60 hours a year. Every page you turn feeds a visible growth ledger of total days, reading velocity, and reading score. - **Monthly reading calendar with gentle streaks and zero wipeout anxiety**: Streak tracking should reward accumulated effort, not punish interruptions. If life gets busy and you miss a day, your monthly calendar, total reading days, and all-time best streak remain untouched. Pick up your book tomorrow and keep going without guilt. - **Mobile home screen widgets and gentle reminders: glance at today's progress and resume in one tap**: Stay connected to your reading habit without opening the app. iOS and Android home screen widgets display your daily progress ring in real time, while gentle scheduled reminders nudge you with your current book or words due for review. Tap the widget to jump straight into your last-read book in seconds. **How it differs from punitive streak and habit apps:** - **Rewards cumulative growth with zero streak-wipeout penalties**: We never reset your hard-earned progress to zero just because you missed a single day. Your growth ledger only moves forward, preserving genuine reading curiosity over anxiety. - **Automatic tracking deeply integrated into real reading**: Reading time and pages are logged quietly as you read books, articles, or podcast transcripts. Inactive idle time is filtered out automatically with zero manual stopwatch clicking. - **Mobile home screen widgets with seamless cross-device synchronization**: Read on your iPhone, iPad, Android device, e-ink reader, Mac, or Windows PC. Your reading stats and widget progress update seamlessly everywhere in real time. **Frequently Asked Questions:** - Q: If I miss a day, will my streak and total reading history be erased? A: No. SentiaRead never wipes out your accomplishments. Your all-time Best Streak, Total Reading Days, and monthly calendar are permanently preserved. A new active streak begins the next time you read, so one busy day never undoes weeks of genuine progress. - Q: Can I customize my daily reading goal duration? A: Yes. 10 minutes is the default because it is the easiest bar to clear on a bad day, but settings let you set the daily goal to 10, 20, 40, or 60 minutes. - Q: How is reading time tracked? Do I need to start a timer? A: No manual timer is required. As you read EPUB books, PDFs, articles, or transcripts in SentiaRead, reading time is tracked automatically in the background. Long pauses and idle periods are automatically excluded for accuracy. - Q: What does the Reading Score (0-100%) measure? A: The Reading Score evaluates your reading consistency, daily goal completion rate, and vocabulary engagement over recent weeks. It provides an objective snapshot of how well your reading routine is taking root. - Q: Can I set daily reading reminders? A: Yes. You can schedule gentle daily reading reminders for your preferred time of day (morning, commute, or evening), nudging you with your current book or words due for review without being intrusive. ### [Podcast Learning](https://sentiaread.com/features/podcast-player) *Tagline*: Learn English with podcasts sentence-synced transcripts SentiaRead plays curated English podcasts with sentence-synced transcripts: the line being spoken is highlighted in real time. Tap any word or complex sentence for instant in-context definitions and syntax breakdowns. Audio automatically pauses so you can focus entirely on understanding, then resumes with one tap. Saved words highlight across all your books. **Key Scenarios:** - **Follow along with sentence-synced transcripts without losing the thread**: The transcript advances smoothly with the audio line by line, keeping the currently spoken sentence highlighted. If your attention drifts for a moment, glance back to find your exact place instantly without scrubbing the audio timeline. - **In-context lookups and sentence breakdowns with automatic pause**: Tap an unfamiliar word or select a tangled sentence: playback pauses automatically so your attention shifts seamlessly to deep comprehension. Understand the exact meaning or simplified syntax structure in place, then tap once to continue listening. - **Turn listening into vocabulary that connects with your reading**: Words saved from a podcast episode are automatically highlighted the next time you meet them in an EPUB novel or article. Listening and reading share the same vocabulary list, synced seamlessly across all your devices. **How it differs from standard podcast players:** - **Curated English shows with vetted transcripts (custom RSS coming in future updates)**: We provide a hand-picked catalog of quality English podcasts with precise sentence alignment. While custom RSS import is in development for future releases, the current curated selection delivers a distraction-free learning experience. - **Twin comprehension engines with smart auto-pause (AI word lookup + sentence breakdown)**: Not just passive captions: every word and sentence can be queried in place. Playback automatically pauses during lookups so you never miss what follows while reading an explanation. - **Listening vocabulary connects directly to your reading library**: Words saved while listening come back highlighted in your books and articles, reinforcing retention across all your devices. **Frequently Asked Questions:** - Q: Can I import my own podcast RSS feeds or custom audio files? A: Currently, SentiaRead comes with a curated selection of high-quality English learning and native podcast shows with verified sentence-synced transcripts. Custom RSS feeds and user audio file imports are on our roadmap and will be rolled out in upcoming updates. - Q: Does playback automatically pause when I look up a word or explain a sentence? A: Yes. When you tap a word to inspect its definition, view a sentence breakdown, or check a translation, audio playback pauses automatically. Because your focus has shifted from listening to active comprehension, pausing prevents you from missing subsequent lines. Tapping resume picks up exactly where you paused. - Q: Can I break down complex spoken sentences in the transcript? A: Yes! Just like reading an EPUB book, you can select any spoken sentence in the transcript to open Reading Assist, which rewrites complex syntax into clear English and breaks it into intuitive thought groups. - Q: Will words saved from podcasts appear in my reading vocabulary? A: Yes! Every word saved from a podcast transcript is stored with its original audio context and syncs across iPhone, iPad, Android, e-ink, Mac, and Windows. When that word appears in an EPUB book or article later, it is highlighted automatically. ## Supported Platforms & Download Links - [Download Hub](https://sentiaread.com/download): Overview for all supported devices - [Chrome Web Store Extension](https://sentiaread.com/extension): Distraction-free reader mode, in-context lookups, and web article clipping ### [macOS](https://sentiaread.com/download/mac) *SentiaRead for Mac* Native macOS AI English reading app. Supports Apple Silicon and Intel Macs. Comfortable typography, drag-and-drop EPUB & PDF reading, and seamless cross-device sync. Platform FAQs: - Q: Which build should I download, Apple Silicon or Intel? A: Open the Apple menu in the top left corner and choose About This Mac. If it says Apple M1, M2, M3 or M4, take the Apple Silicon build. If it says Intel, take the Intel one. Almost every Mac sold after 2020 is M-series. The features are identical either way. Apple Silicon simply runs natively, so it is faster and easier on the battery. - Q: Which macOS versions are supported? A: macOS 12 Monterey or later, on both Apple Silicon and Intel. Keep macOS on its latest update: the app relies on the system WebKit engine, which Apple updates together with Safari. macOS 11 and earlier are not supported. - Q: How do I install it? A: 1. Double-click SentiaRead.dmg in your Downloads folder. 2. Drag the SentiaRead icon onto the Applications folder and wait for the copy to finish. 3. Open it from Launchpad. EPUB and PDF are both supported, so drag a book into the window, or start with the curated books included in the app. - Q: Which formats can I import, and how do I get my own content in? A: Book files: EPUB, PDF, TXT and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported, and neither are DRM-protected EPUBs or PDFs that are password-locked or pure scans. Files: use Import in the library, or drag an EPUB, TXT or PDF onto the window. Text: copy anything, choose Import from clipboard in the library, and paste; it is saved as a clipping. Pasting a link only saves the link as text; it does not fetch the page. Web articles: install the Chrome extension and save them from the article itself. - Q: macOS says the app “cannot be opened” or “is damaged”. What now? A: That is Gatekeeper, the macOS check applied to apps distributed outside the App Store. It takes about 30 seconds to clear. The quickest way: right-click SentiaRead in Applications, choose Open, then click Open again in the dialog. Double-clicking works normally from then on. Alternatively, open System Settings › Privacy & Security, find the blocked SentiaRead entry and click Open Anyway. If it still refuses to launch, get in touch with support: we would rather hear about it than have you stuck. - Q: Do I need to pay again to use it on multiple devices? A: No. One account works everywhere, and Plus follows the account rather than the device: buy it on your phone and it is already active when you sign in on your Mac, and the same the other way round. There is no limit on how many devices you use. Once you are signed in, your books, imported documents and saved webpages, reading progress, vocabulary, highlights and notes all sync, so you can pick up where you stopped. What travels through the cloud is the readable content (text, images, cover), not a backup of your original EPUB or PDF, which stays on the device you imported it on. ### [Windows](https://sentiaread.com/download/windows) *SentiaRead for Windows* Read English books on Windows 10 and 11. Lightweight installer, drag-and-drop EPUB & PDF reading, distraction-free desktop typography, and real-time cloud sync. Platform FAQs: - Q: How do I install it? A: 1. Double-click the downloaded SentiaRead-Setup.exe and follow the prompts. 2. If Windows shows a SmartScreen notice, click More info, then Run anyway. The installer is signed and verified. SmartScreen simply has not seen this release often enough yet. 3. Open the app. EPUB and PDF are both supported, so drag a book into the window, or start with the curated books included in the app. - Q: Which formats can I import, and how do I get my own content in? A: Book files: EPUB, PDF, TXT and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported, and neither are DRM-protected EPUBs or PDFs that are password-locked or pure scans. Files: use Import in the library, or drag an EPUB, TXT or PDF onto the window. Text: copy anything, choose Import from clipboard in the library, and paste; it is saved as a clipping. Pasting a link only saves the link as text; it does not fetch the page. Web articles: install the Chrome extension and save them from the article itself. - Q: The installer reports an error or a missing component. What now? A: The installer normally adds everything it needs. If it asks for WebView2, download the WebView2 Runtime from Microsoft, install it, and start SentiaRead again. If the error persists or names something else, get in touch with support and send us what the message says: we would rather hear about it than have you stuck. - Q: Does it support Windows 7, 8 or 32-bit systems? A: No. The desktop app uses modern system components and requires 64-bit Windows 10 or later. - Q: Do I need to pay again to use it on multiple devices? A: No. One account works everywhere, and Plus follows the account rather than the device: buy it on your phone and it is already active when you sign in on your PC, and the same the other way round. There is no limit on how many devices you use. Once you are signed in, your books, imported documents and saved webpages, reading progress, vocabulary, highlights and notes all sync, so you can pick up where you stopped. What travels through the cloud is the readable content (text, images, cover), not a backup of your original EPUB or PDF, which stays on the device you imported it on. ### [iPhone / iPad](https://sentiaread.com/download/ios) *SentiaRead for iPhone & iPad* Read English books on iPhone and iPad. Download from the App Store for one-tap lookups, iPad two-column layout, and seamless handoff with your computer. Platform FAQs: - Q: Which formats can I import, and how do I get my own content in? A: Book files: EPUB, PDF, TXT and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported, and neither are DRM-protected EPUBs or PDFs that are password-locked or pure scans. Files: use Import in the library, or share a file from the Files app, AirDrop or Mail and choose Open in SentiaRead. Web articles: paste the link into the import field, or tap Share in Safari and pick SentiaRead. The article is extracted on your iPhone. Pages behind a login or paywall usually cannot be read this way. Anything imported on your computer shows up here as soon as you sign in with the same account. - Q: Can I read offline? A: Yes. Once downloaded, books are available to read offline anytime. Because in-context lookups analyze real-time context with AI, looking up words requires an internet connection. - Q: Is there a dedicated layout for iPad? A: Yes. In landscape orientation, iPad uses two columns with full control over typography, and supports Split View note-taking. - Q: Do I need to pay again to use it on multiple devices? A: No. One account works everywhere, and Plus follows the account rather than the device: buy it on a computer or Android phone and it is already active when you sign in on your iPhone or iPad, and the same the other way round. There is no limit on how many devices you use. Once you are signed in, your books, imported documents and saved webpages, reading progress, vocabulary, highlights and notes all sync, so you can pick up where you stopped. What travels through the cloud is the readable content (text, images, cover), not a backup of your original EPUB or PDF, which stays on the device you imported it on. ### [Android](https://sentiaread.com/download/android) *SentiaRead for Android* Read English books on Android phones and tablets. Install from Google Play or download the official APK. One-tap lookups, tablet two-column layout, and cloud sync. Platform FAQs: - Q: How do I install the official APK? A: Two steps. Installing from Google Play needs none of this. 1. Download SentiaRead.apk in your browser, then tap it in your notification shade or Downloads folder. 2. Grant permission when Android asks to install apps from this source, then tap Install. - Q: A new version is out. How do I update? A: SentiaRead tells you at launch when a newer version exists. Tap Update and the download opens in your browser, then install the new APK over the old one; your library, reading progress and saved words all stay where they are. You can also come back to this page and grab the current APK whenever you like. - Q: Is the APK different from the Google Play build? A: No. Features and version numbers are identical. - Q: Which build should I use on an E-Ink reader like Boox? A: The same app either way: installed from Google Play or from the APK, both support E-Ink. The E-Ink page linked above covers what E-Ink mode changes and which readers we have tested. - Q: Which formats can I import, and how do I get my own content in? A: Book files: EPUB, PDF, TXT and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported, and neither are DRM-protected EPUBs or PDFs that are password-locked or pure scans. Files: use Import in the library, or open a file from your file manager and choose SentiaRead. Web articles: paste the link into the import field, or use Share in your browser and pick SentiaRead. The article is extracted on the device. Pages behind a login or paywall usually cannot be read this way. Anything imported on your computer shows up here as soon as you sign in with the same account. - Q: Do I need to pay again to use it on multiple devices? A: No. One account works everywhere, and Plus follows the account rather than the device: buy it on a computer or iPhone and it is already active when you sign in on your Android device, and the same the other way round. There is no limit on how many devices you use. Once you are signed in, your books, imported documents and saved webpages, reading progress, vocabulary, highlights and notes all sync, so you can pick up where you stopped. What travels through the cloud is the readable content (text, images, cover), not a backup of your original EPUB or PDF, which stays on the device you imported it on. ### [E-Ink readers](https://sentiaread.com/download/eink) *SentiaRead for E-Ink readers* An English reading app tuned for electronic paper. High-contrast E-Ink mode, volume-key page turns, and support for Onyx Boox, Hanvon, iReader and other open Android e-readers. Platform FAQs: - Q: How do I install it on an E-Ink reader? A: Either channel installs the same build. With Google Play: search for SentiaRead in the Play Store and install it; updates then arrive automatically. Without Google services: open this page in the reader browser and download the APK, then allow installing apps from unknown sources when prompted. You can also download it on a computer and copy it over by USB or wireless transfer. On first launch the app detects the E-Ink hardware and turns on E-Ink mode itself. - Q: A new version is out. How do I update? A: Installed from Play: updates arrive on their own, nothing to do. Installed from the APK: SentiaRead tells you at launch when a newer version exists. Tap Update to open the download in your reader browser and install the new APK over the old one, or come back to this page for the current APK whenever you like. Your library, reading progress and saved words all stay where they are. - Q: Which formats can I import, and how do I get my own content in? A: Book files: EPUB, PDF, TXT and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported, and neither are DRM-protected EPUBs or PDFs that are password-locked or pure scans. Files: use Import in the library, or open a file from your file manager and choose SentiaRead. Web articles: paste the link into the import field, or use Share in your browser and pick SentiaRead. The article is extracted on the device. Pages behind a login or paywall usually cannot be read this way. Anything imported on your computer shows up here as soon as you sign in with the same account. - Q: Do I need to configure a special refresh mode for SentiaRead? A: Usually not. E-Ink mode removes all animations and scrolling, so normal or HD refresh is clear and sharp. - Q: Is it the same application as the phone version? A: Yes, the same app. Google Play and the APK install the same build, and both support E-Ink. Once it detects an E-Ink screen it turns on E-Ink mode automatically, and one account syncs across every platform. - Q: Does it work on Kindle? A: No. Kindle is a closed system that does not run Android apps. For reading with SentiaRead, we recommend open Android devices like Onyx Boox. - Q: Is it the same account as my phone and computer, and do I pay twice? A: No. One account works everywhere, and Plus follows the account rather than the device: buy it on your phone or computer and it is already active when you sign in on your reader, and the same the other way round. There is no limit on how many devices you use. Once you are signed in, your books, imported documents and saved webpages, reading progress, vocabulary, highlights and notes all sync, so you can pick up where you stopped. What travels through the cloud is the readable content (text, images, cover), not a backup of your original EPUB or PDF, which stays on the device you imported it on. ## Comprehensive FAQ Hub ### Getting started and importing content - **Q: What is SentiaRead and who is it for?** A: SentiaRead is a reading and vocabulary acquisition tool built for English learners. "Sentia" comes from Latin, meaning "to perceive": our AI perceives the context of what you are reading to give exact definitions, and adapts explanations to your proficiency level. With in-context lookups, sentence simplifications, library-wide word highlights, and cross-device sync, you acquire English naturally through real reading. It is ideal for readers of English books, learners building active vocabulary, and professionals reading international articles. - **Q: How do I get started?** A: Download the app on macOS, iOS (iPhone & iPad), or Android, create an account, and start importing your EPUB ebooks. We offer a free version so you can experience AI contextual definitions and visual memory reinforcement. Upgrade to Plus to unlock cloud sync, full podcast transcripts, unlimited storage, unlimited translations, and more. - **Q: Which content formats are supported?** A: SentiaRead supports EPUB, PDF, TXT, and Markdown files, alongside podcast transcripts and YouTube video subtitles. You can also import web articles via our browser extension or paste text directly from your clipboard. All library content supports in-context lookups, sentence simplification, and automatic vocabulary highlighting. Podcasts and videos feature synced captions, notes, and instant lookups. - **Q: How do I get my own books and web articles in?** A: Files: use Import in the library, or on a computer drag an EPUB, PDF, TXT or Markdown file onto the window. On phones and E-Ink readers, open the file from your file manager and choose SentiaRead. Web articles: paste the link into the import field, or use Share in your browser and pick SentiaRead. On a computer, install the Chrome extension and save the article from the page itself. Pages behind a login or paywall usually cannot be read this way. Text: copy anything, choose Import from clipboard in the library, and paste. It is saved as a clipping. Pasting a link only saves the link as text, it does not fetch the page. Whatever you import on one device is readable on the others as soon as you sign in with the same account. ### AI features and how the learning works - **Q: How does the AI contextual definition work?** A: Highlight any word or phrase and the AI coach instantly generates the most relevant explanation based on the surrounding text. You can tailor the difficulty (A1-C2 CEFR level) or even stay fully in English for immersive practice. For example: • Traditional dictionary: "run" has 20+ definitions, leaving you to guess which applies • SentiaRead: In "The program runs smoothly," "run" means "to execute or operate" (explained with B1-level vocabulary if that is your setting) This is i+1 comprehensible input: every explanation sits comfortably within your reach. - **Q: Can it help with long, complex sentences?** A: Yes. When a sentence slows you down, tap Reading Assist and SentiaRead rewrites it into a simpler version that keeps the original meaning. It is a faithful restatement, not a summary, so nothing is dropped. The rewrite follows the i+1 comprehensible input principle: the simplified sentence stays just within your reach instead of pushing you somewhere harder. - **Q: What is the visual memory reinforcement feature?** A: When you add a word to the "Learning" list, it is highlighted automatically across everything you read afterwards. Seeing it in multiple authentic contexts reinforces recall far better than rote memorization. ### Devices and cloud sync - **Q: Which devices are supported?** A: SentiaRead is available on macOS, Windows, iOS (iPhone & iPad), Android, and as a browser extension for Chrome. Android E-Ink reading devices are also fully supported. All platforms share the same core features: AI contextual definitions, visual memory reinforcement, and cloud sync. - **Q: How does backup and sync work?** A: Your progress, highlights, and vocabulary lists sync automatically across all your devices via secure cloud sync. Every change follows you instantly. Pick up right where you left off on any device. All data is encrypted for security. - **Q: Does it work on Kindle?** A: No. Kindle is a closed system that does not run Android apps. For reading with SentiaRead, we recommend open Android devices like Onyx Boox. ### Plus and subscriptions - **Q: What is the difference between Free and Plus?** A: Free is a complete reader on its own: library, reading and notes are all there, plus a weekly allowance of AI credits for in-context lookups and explanations. AI is not locked behind Plus. Plus removes the credit ceiling. Lookups, translation, AI explanations and short-text generation become unlimited under fair use, and you also get cloud sync across devices, multimedia ingestion (transcription and text-to-speech), 120 minutes of high-quality read-aloud voice per month, advanced notes and priority support. - **Q: If I subscribe to Plus on one device, can I use it on all my devices?** A: Yes! Your Plus subscription is tied to your account, not to any specific device or platform. Whether you subscribe on iPhone, Mac, or Android, the benefits apply everywhere you sign in. There is no limit on the number of devices. You can be signed in and using SentiaRead on multiple devices at the same time. - **Q: How do I manage my subscription?** A: On iPhone and iPad: open Settings, tap your name, then Subscriptions, and manage it through your Apple ID. On Android: open the Google Play Store, tap your profile picture, then Payments and subscriptions. On macOS and Windows: open Settings inside the app and go to Account. - **Q: How are payments processed? Are they secure?** A: All payments are handled by trusted payment providers, never by us directly. On iPhone and iPad you pay through the App Store, and on Android through Google Play. On macOS, Windows, and the web, payments are processed by Stripe, a PCI DSS certified payment platform used by millions of businesses worldwide. SentiaRead never sees or stores your card details. - **Q: What is the refund policy?** A: You can cancel your subscription at any time, and Plus stays active until the end of the period you already paid for. Cancelling does not refund the unused part of that period. For purchases made through this website (Stripe), email support@sentiaread.com within 14 days of payment and we will refund you in full, no questions asked. For purchases made through the App Store or Google Play, Apple or Google is the seller, so refunds are handled under their store policies and we cannot process them ourselves. - **Q: Can I get an invoice?** A: Yes. For purchases made through Stripe, email support@sentiaread.com with the email address used for your purchase, your full name or company name, and your full billing address. Include your tax ID if applicable. We can provide a PDF invoice. For App Store or Google Play purchases, please get your receipt from the store where you made the purchase. ### Privacy and data security - **Q: How does SentiaRead handle data privacy?** A: SentiaRead does not collect your browsing history. When you trigger a lookup or save vocabulary, the current page URL and title are processed as learning context. On startup, your IP address is used only to infer a coarse country code for routing to the nearest service region. We never sell user data. - **Q: Is my data secure?** A: Yes. All data is encrypted in transit and at rest, and we never sell user data. Our Privacy Policy spells out exactly what we store and why. ## Learning Philosophy & Founder Notes - [Learning Philosophy](https://sentiaread.com/philosophy): How a laid-off engineer went from juggling kids and freelance gigs to building a focused English reading tool. The dev journey, every product choice, and the second language acquisition research behind SentiaRead. ## Blog & English Acquisition Articles - [最高效提升英语词汇量的方法](https://sentiaread.com/zh/blog/vocabulary-method) 词汇量不是背出来的，是在大量阅读里一次次"遇见"出来的。这篇讲清楚背单词为什么低效，以及用可理解输入和 i+1 真正把词汇量读起来的一整套方法。 - [以使用为目的学英语，别再为考试而学](https://sentiaread.com/zh/blog/use-as-purpose) 考试早就考完，学英语的方法却还停在备考那套。把目的从"应试"换成"使用"，方法会自己变过来——丢掉语法书、不背单词，从远低于应试水平的简单内容无痛开始，在生活里把英语用起来。 - [为什么脱离了考试，背单词学语法的方法就不好使了？](https://sentiaread.com/zh/blog/school-method-loop) 背单词、学语法、做题——这套应试方法在学校管用，但出了学校就失灵了。问题出在哪？怎么换一条真正有效的路？ - [学英语，重要的是持续，把它变成习惯](https://sentiaread.com/zh/blog/consistency) 学英语，迈出容易的第一步很重要，但能不能持续、把它养成习惯，才真正拉开差距。多数人不是输在方法，而是卡在“坚持”——到底卡在哪，又该怎么破？这篇说透。 - [你的英语基础没那么差，从一本简单的英文书读起](https://sentiaread.com/zh/blog/first-english-book) 很多人以为自己英语差，其实只是一开始就挑错了书。你十年攒下的词汇量底子，足以读懂一本难度合适的简单英文书——先完整读完第一本，用成就感推着自己坚持下去。 - [学英语别再找"最好的方法"了，先开始](https://sentiaread.com/zh/blog/just-start) 学英语走过最多的弯路，是一直在找"最好的方法"。其实方法好不好没那么重要——真正重要的是今天就开始、并且不停下来。这篇讲怎么用每天十分钟真正起步。