An EPUB reader built for reading real English books

SentiaRead lets you read your own EPUB books — alongside PDFs, web articles, and podcast transcripts in the same library. Tap any word while you read and AI explains what it means in that sentence, matched to your CEFR level, without leaving the page. Saved words then stay highlighted across everything you read. It works on iPhone, iPad, Android, e-ink devices, Mac, and Windows.

Available on iPhone, iPad, Android, Mac, Windows, E-Ink, and Chrome.

Start a real English book today, with no setup

A shelf of beautifully formatted books ships with the app, including approachable originals like The Weekend — open it and begin on page one. Bringing your own is just as easy: import an EPUB and it sits in one library with your PDFs, saved web articles, and podcast transcripts.

Stay in the story from the first chapter to the last

A novel only works while you keep the thread — who these people are, what just happened, what the scene is doing. One tap answers an unknown word on the spot, so nothing sends you out to a dictionary and back into a page you then have to find again. Chapters keep their typography and your position, so an evening of reading stays one unbroken evening.

Pick the book up on any device

Read the same book on iPhone, iPad, Android, e-ink, Mac, and Windows. Reading progress, highlights, and your word list stay in sync across all of them. Once a book is downloaded it reads offline; only AI lookups need a connection.

Different from a generic EPUB app

No app-switching to a dictionary

The help is on the page you are reading, so your place in the book — and your momentum — survives the lookup.

Explanations, not definition dumps

AI explains the one sense this sentence uses, in words at your level, instead of handing you a full dictionary entry.

Your vocabulary follows you

Words you save keep getting highlighted in the next book and the next article, on every device you read on.

Frequently Asked Questions

EPUB, PDF, TXT, and Markdown. Kindle formats (MOBI, AZW3) and Word documents are not supported. Beyond books, you can also import web articles, podcasts, and YouTube transcripts into the same library.
DRM-free EPUBs open normally. DRM-protected EPUBs cannot be opened, and neither can PDFs that are password-locked or pure scans.
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.
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.

Works together with

Open a real English book tonight

Free to start. Import your own EPUB, or begin with a book already on the shelf.