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Readest vs Apple Books: catalog facts
Readest	Apple Books
Freemium The app is free and open source under the AGPL. The optional cloud sync service has paid…	Free The app is free; ebooks and audiobooks are bought individually with no subscription.
Windows, macOS, Linux, Android, Web, iOS	macOS, iOS
Reads EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown in one app The same reader on macOS, Windows, Linux, Android, iOS and the web	Ebooks and audiobooks in a single app Reading position syncs through iCloud
Cloud sync is a hosted service with paid tiers, not purely local A young project, so features and stability are still moving	Only available on Apple devices Store purchases are tied to Apple's ecosystem
Downloadable app, Web application	Downloadable app
Open source	Closed source
License: AGPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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