Readest: EPUB & PDF Reader

In-app purchases
1.25K reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
Learn more
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About this app

Readest is a modern, open-source ebook reader for people who read a lot, and want their books, notes and progress to follow them everywhere.

Open EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown, and tune the reading experience down to the last detail.

Read your way
• Paginated or scrolling modes with smooth page-turn animations
• Custom fonts, themes, spacing, margins and columns
• Vertical text for CJK books
• Built for e-ink, with contrast tuned for slow-refresh screens
• Open up to four books side by side for research and comparison

Your whole library
• Browse and download from OPDS catalogs and public libraries
• Connect to Calibre and Calibre-Web, covers and metadata included
• Organize with custom bookshelf groups
• Full-text search inside a book

Notes that last
• Highlights, bookmarks and structured notes
• Copy a highlight together with a deep link back to the passage
• Export your annotations

Listen and understand
• Text-to-speech with downloadable offline voices and Android Auto support
• Translate a sentence, a page, or an entire book
• Wikipedia and dictionary lookup without leaving the page

Sync everywhere
• Readest Cloud, or bring your own: Google Drive, OneDrive, WebDAV, S3
• KOReader sync keeps your progress in step with your e-reader
• Android, iOS, macOS, Windows, Linux and the web

Readest is open source. Questions or ideas: support@readest.com
Privacy policy: https://readest.com/privacy-policy
Read EPUB, PDF & more. Sync, annotate, translate and listen on every device.
Updated on
Aug 28, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info, Files and docs and 2 others
  • This app may collect these data types
    Files and docs
  • Data is encrypted in transit
  • You can request that data be deleted
  • Committed to follow the Play Families Policy

Ratings and reviews

1.07K reviews
Eli Smith
September 2, 2026
I haven't been using this app for very long (trying to move away from google books), but I'm really enjoying that I can add tags to books and that I can see the series. the only thing I wish I could do (so far) is adding tags to multiple books at a time because that would be a massive time saver (I have over 1,000 epubs saved to my phone)
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Readest
September 2, 2026
Thanks for the feedback. We will support this in upcoming updates.
Ben Parisi
June 14, 2026
It improves with every update, but it is really fantastic. The plug in works perfectly, lifetime subscription for not much if you want it, or free use for tons of epubs. Just reading in the app itself is excellent on eink devices on android. All the options I could want. Only change I would ask for is being able to tap the progress bar at the bottom and be able to cycle through all the options instead of doing it in the menu. great work guys.
13 people found this review helpful
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Ian Meisner
June 11, 2026
I only use this for mobile as I have no need to read on my computer. If you are just using this to read, this app will fulfill that purpose. I have a few issues with the app. First off, adding books takes forever especially when you have quite a collection downloaded. 2nd there are quite a few issues with the TTS, in 3 different books, the TTS changes from English to French for no reason, you also cannot change the TTS voice, and it does not update the book on where you are at when you finishTTS
3 people found this review helpful
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What’s new

• Audiobooks: Added Audiobookshelf support for streaming audiobooks and podcasts, and you can now pair an audiobook with its ebook to read along as it plays
• Text-to-Speech: Added a lyric-style view that shows the sentences around the one being read, plus per-book offline voice downloads and steadier pauses between sentences
• Library: You can now browse the web inside Readest to add books, choose which chapters to import from a web novel, hide covers for privacy, and wat...