E-ReaderVocabulary BuilderAll in one

Your books. Your way. Every word, kept.

Bookxie is a free, beautifully customizable EPUB e-reader for Android, iOS, Windows, and the web. Fine-tune fonts, themes, and spacing until reading feels exactly right — then tap any word to look it up and keep it forever.

A guided tourInside the app
01 / 09 Your Library, Reimagined Every book you own, organised beautifully and always just a tap away — your entire reading life in one place.
Vol. IIOne libraryEvery device

Pick up mid-sentence,
anywhere.

Your page, your highlights, your deck — synced the instant you set one device down and pick up another. No buttons. No "refresh". Just the same book, waiting.

< 1s
Sync latency
5 platforms
iOS · Android · Tablet · Mac · Web
End-to-end
Encrypted in transit
Vol. IIIThe home screenOne glance

Bookxie lives on your home screen.

A small daily nudge. Pin a widget to keep your streak alive, see how many words you owe, or resurface a forgotten line — without ever unlocking the app.

4 widgets
Streak · Review · Reading · Memory
5 sizes
From 1 × 1 to 4 × 2
Every 30 min
Refreshed in the background
iOS + Android
Lock screen on iOS 16+
Vol. IVMemory resurfacingOn this day, you read

What you read,
remembering you.

Every morning, Bookxie hands back a line you forgot you loved. The chapter you finished a year ago. The first word you saved from this book. Like Photos for the pages of your life.

The Alchemist
You reacted 🎯 to this last week
He canceled all his commitments and pulled together the most important of his books, and n…
The Alchemist cover
The Alchemist last week
The Art of Spending Money
You reacted 💡 to this 2 months ago
The way we spend money reveals what we truly value — often more honestly than what we say out loud.
The Art of Spending Money cover
The Art of Spending Money 2 months ago
Atomic Habits
You reacted 🔥 to this 3 days ago
Every action you take is a vote for the type of person you wish to become.
Atomic Habits cover
Atomic Habits 3 days ago
Resurfaces every morning at 8 AM Mute · keep · save to deck Spoiler-safe by chapter
01Features

The EPUB e-reader built for readers who want to remember.

A customizable e-reader that treats vocabulary and memory as first-class features — not afterthoughts. Supports EPUB, PDF, DOCX, and TXT. Everything below ships on day one, free.

01

A customizable EPUB reader, distraction-free

Supports EPUB, PDF, DOCX, and TXT. Choose from bundled serif and sans fonts. Five reading themes including Sepia and Night mode. Pixel-precise font size, line spacing, and margin controls. Reading should feel exactly like your kind of reading.

02

Tap any word while reading — instant definition

One tap on any word in your EPUB reveals its meaning, pronunciation, and a context sentence from the exact page you're on. Tap Learn and it's saved to your vocabulary deck forever.

03

Spaced repetition that just works

The same science behind Anki, hidden behind a beautiful interface. Reviews scheduled at the exact right moment — before you forget.

04

AI that earns its place

Every flashcard is enriched with examples, related words, and a memory hook tied to the exact book and chapter you saved it from.

05

Ask the book

Finished a chapter? Ask anything about what you've read. No spoilers, no detours — only what's already on your page.

06

Sync across every device

Your position, highlights, reactions, and deck — perfectly in sync from your phone to your tablet to your desktop.

02How it works

The e-reader loop: Read. Tap. Remember.

No dashboards. No streaks to maintain. Just a reading tool quiet enough to disappear into the act of reading — and smart enough to make sure what you read actually stays with you.

The card on the right is the whole product.

When you tap a word while reading, this is what appears. The word itself. The sentence it lived in. A clean definition. Related vocabulary. And four buttons to tell Bookxie how well you knew it.

That's it. That's the loop. Read the book. Save the word. Review it when Bookxie tells you to. Never lose it again.

Your flashcard
ephemeral
/ɪˈfem(ə)r(ə)l/ · adjective
"The light through the curtain was thin, almost ephemeral, the kind of light that arrives briefly and then is gone before you can name it."
Lasting for a very short time; fleeting. from Greek ephēmeros — lasting only a day.
Again1d
Hard3d
Good8d
Easy21d
An e-reader without memory is like
filling a leaking bucket.
Bookxie · From the Editor's Note
03From our readers

What readers say.

I've used Anki for seven years. Bookxie does what I always wanted Anki to do — be inside the book itself. I save words without breaking the spell of reading.
Rakib Hossain Raju
Rakib Hossain Raju
Language learner · Bangladesh
Reading apps usually feel cold. Bookxie feels like a beautifully designed notebook that happens to have a memory engine inside it. I read more because of it.
Reneldis
Reneldis
Bookworm · Indonesia
Three months in and I genuinely remember vocabulary from books for the first time in my life. The spaced-repetition just quietly does its job — I barely notice it until I realise the words are staying.
Reddit User
Reddit User
Reader · Reddit
04Questions & answers

Everything you need to know.

What file formats does Bookxie support?
Bookxie supports EPUB files — the open standard for digital books. You can import any DRM-free EPUB directly from your device. Support for additional formats is on the roadmap.
Is Bookxie free?
Yes. Bookxie is free to download and use. A Pro subscription unlocks advanced features. You can try Pro free for seven days — no credit card required, cancel any time.
How does the vocabulary and spaced-repetition system work?
Tap any word while reading to get an instant definition. Save it to create a vocabulary card — Bookxie uses AI to generate a definition, example sentences, and related words. Cards then enter a spaced-repetition review queue: you review them at scientifically optimised intervals so they move from short-term recognition into long-term memory, automatically.
Does it work offline?
Yes. Your entire library, reading progress, highlights, and vocabulary cards are stored locally on your device in a SQLite database. You can read, highlight, and review vocabulary cards with no internet connection. Changes sync to the cloud automatically when you come back online.
Can I sync across multiple devices?
Yes. Sign in with your Google account on any device — Android, iOS, Windows, or the web app at app.bookxie.com — and your library, reading position, highlights, notes, and vocabulary cards sync automatically in real time.
Which platforms is Bookxie available on?
Bookxie is currently available on Android (Google Play), Windows (GitHub releases), and as a web app. An iOS version is coming soon.
How do I delete my account and data?
Email hello@bookxie.com and we will permanently delete your account and all associated data from our servers within 30 days. You can also export all your data first via Settings → Account → Export my data inside the app.
Vol. IClosing the book

Your EPUB library.
Every word, remembered.

A free e-reader for Android, iOS, Windows, and the web — with vocabulary learning built in. Try Pro free for seven days. No card required, cancel any time.

Google Play Early Access · BetaGoogle Play Windows Get it onWindows
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