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RIDI vs Rakuten Kobo App: catalog facts
RIDI	Rakuten Kobo App
Free The viewer apps are free; books, webtoons and web novels are bought from the RIDI store.	Free The app is free; ebooks and audiobooks are bought separately.
Windows, macOS, Android, iOS	Android
Apps for phones, tablets and desktop computers Covers ebooks, webtoons and web novels	Large catalogue of ebooks and audiobooks Works alongside Kobo eReaders
Only reads content from the RIDI store Desktop viewer is still a beta	Tied to the Kobo store Site uses tracking for advertising and analytics
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 October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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