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Apple Books vs RIDI: catalog facts
Apple Books	RIDI
Free The app is free; ebooks and audiobooks are bought individually with no subscription.	Free The viewer apps are free; books, webtoons and web novels are bought from the RIDI store.
macOS, iOS	Windows, macOS, Android, iOS
Ebooks and audiobooks in a single app Reading position syncs through iCloud	Apps for phones, tablets and desktop computers Covers ebooks, webtoons and web novels
Only available on Apple devices Store purchases are tied to Apple's ecosystem	Only reads content from the RIDI store Desktop viewer is still a beta
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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