Compare software

ProseReaderKOReader
Free

Free and open source under the GPL-3.0.

 Free

Free and open source under the AGPL 3.0.

Android Linux, Android
  • Actively developed with frequent releases
  • Available on F-Droid
  • Runs on Kindle, Kobo, PocketBook, Cervantes and reMarkable hardware
  • Opens PDF, DjVu, CBZ, EPUB, FB2, Mobi, DOC, RTF, HTML, CHM and TXT
  • Focused on EPUB files
  • Small user base and community
  • Installing on a locked e-reader means jailbreaking it first, at your own risk
  • The settings menus are deep and not self-explanatory
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.