Episteme vs LibreraX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Episteme
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Episteme Reader is an offline-first, privacy-focused document and e-book reader. It supports PDF, EPUB, MOBI, AZW3, FB2, ODT/FODT, DOCX, Comics, Markdown, HTML, and plain text files. • Two Reading Modes Switch between a paginated view for a traditional book-like experience and continuous vertical scrolling for quick reading. Both modes work across all supported formats. • PDF Annotations Draw directly on PDF pages using pen, fountain pen, pencil, highlighter, and eraser tools. Add text boxes anywhere on a page with system or imported fonts. Annotated documents can be exported with full vector fidelity. • Custom Fonts Import your own font files (.ttf, .otf) and use them while reading any ebook format. Embedded book fonts and system fonts are also fully supported. • Text Selection & Search Select, copy, and search text across all formats. Full-text search with background indexing for large documents. built-in OCR support for scanned or image-based PDFs. • Text-to-Speech Listen to any document using your device's TTS engine. • Smart Tools (Pro) Get context-aware dictionary definitions for words and phrases. Generate concise summaries of chapters or pages to quickly understand complex material. • Library & Organization Manage your collection with custom shelves and collections. Sort by title, author, or reading progress. Jump back into recent books instantly. • Local Folder Sync Point Episteme at a folder on your device to automatically import and track books. • Privacy Episteme is designed to work entirely offline. No account is needed for any core feature. AI-powered\online features process data securely in memory without storing any user content.
LibreraX
This application allows you to read a wide variety of book formats, including EPUB and PDF. Customize your reading experience with adjustable fonts, backgrounds, and reading modes. Organize your library, add notes, and even listen to books with text-to-speech functionality.
- Supports EPUB, PDF, MOBI, and more
- Customizable fonts, backgrounds, and themes
- Add bookmarks and notes
- Text-to-Speech (TTS) functionality
- Organize library with tags and favorites
- Search free books in OPDS Catalogs
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LibreraX Reader by Librera is a beautiful and modern application for reading all the books you love, just download this app and enjoy. Great ways to read books - Support formats EPUB, PDF, MOBI, DJVU, FB2, TXT, RTF, AZW, DOC, DOCX, ODT - Choose attractive fonts and customize the background - Add bookmarks, notes - Open selected word or sentence in the dictionary - You can find a word or phrase anywhere in your book - Turn on Night Theme to make reading more comfortable - Adjust your screen brightness - Choose of reading mode: scroll continuously or flipping in book pages - Organize your library any way you like - Search for many free books in OPDS Catalogs - Listen to books that are read out loud to you with Text To Speach (TTS, Speech synthesizer) - Browse the books in the built-in File Manager - Organize books in Favorite list, tags collections - Table of contents - Fonts, Font color, Background, font size, margins, line spacing, hyphenation, hyphenation language, skip author style options - Brightness control (swipe up to down to adjust) - Rotation lock, left-right movement lock - Bookmarks (possibility export as text to email) - Double(two) pages, half page or one page on the screen. - Opening books from external applications and browser - Recent (last open) books list - Online book catalogs(OPDS) - Share Web page to EPUB Reader as a book - Beautiful books widget(recent or favorites) to the desktop - Fast reading mode - Support books in the archive Librera Book Reader software Terms of Use (EULA): https://librera.app/terms.html
Screenshots
Verdict
The clearest difference is ads: Episteme at none against LibreraX's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Episteme sells 5 one-off in-app purchases and LibreraX sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Episteme ships an update every 4 days, LibreraX every 5 days. Both last shipped on November 10, 2026.
| Parameter | Episteme | LibreraX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 days — better | Every 5 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 102 MB | 112 MB |
| Age rating | 12+ | 4+ |
| Developer | Aryan Raj | Ivan Ivanenko |
In-app purchases
Episteme
- Wallet Top-Up $1$0.99
- Wallet Top-Up $5$4.99
- Episteme Pro$5.99
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- Wallet Top-Up $10$9.99
- Wallet Top-Up $20$19.99
LibreraX
- LibreraX Pro$0.991 Month









