Readest: EPUB & PDF Reader
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1.52K reviews
Rated for 3+
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100K+
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Rated for 3+
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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: [email protected]
Privacy policy: https://readest.com/privacy-policy
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: [email protected]
Privacy policy: https://readest.com/privacy-policy
Read EPUB, PDF & more. Sync, annotate, translate and listen on every device.
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Ratings and reviews
1.31K reviews
Namer Kramer
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November 3, 2026
Trying to use this app to read books in new languages. I am taking advantage of the highlight to read aloud function. Having each paragraph auto translated is very helpful. However, I wish that there was a way to have the TTS play at the same time as the translation. I want to hit a word and hear the pronunciation and see the translation at the same time. This would save me so much time. Edit: I decided since the app is open source, I can just add the feature myself. And I did! 5/5 stars!
Sheibban Pervez
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November 2, 2026
One of the best, good looking app I have come across. It is exactly what i needed. Have bought the LTF too, just two feedback, or feature requests. If the account sync could also sync layout, theme, spacing settings, it would be amazing.
dickia pyc
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October 22, 2026
was my fav reading app until the read aloud/text to speech feature doesn't work for me. It's been a couple of days and I've tried clearing the cache, but it's still not working. I can't put myself to clear the data or uninstall-reinstall the app because the last time I did it i lost all the books in my library, the backup and restore feature didnt work. *update: i updated to the latest version and its working again!
Readest
October 18, 2026
The TTS issue is fixed in 0.12.16 version which is still under review in Google Play. Once the review is completed, you can update to this version to fix the issue. Sorry for the inconvenience.
What’s new
• Vocabulary: You can now build a vocabulary list, mark words as Learning or Mastered for Word Lens hints, and sync with Anki
• Statistics: Added a reading statistics dashboard so you can see your reading habits at a glance
• Reading: Added Page Flip and paper curl page turns, a page preview while dragging the progress slider, a straight-line reading ruler, and keyboard-only text selection
• Styling: You can now ignore publisher fonts, make white image backgrounds transpar...
• Statistics: Added a reading statistics dashboard so you can see your reading habits at a glance
• Reading: Added Page Flip and paper curl page turns, a page preview while dragging the progress slider, a straight-line reading ruler, and keyboard-only text selection
• Styling: You can now ignore publisher fonts, make white image backgrounds transpar...
Rated for 3+
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About the developer
Bilingify LLC
30 N Gould St Ste R
Sheridan, WY 82801-6317
United States
+86 186 0106 4640
