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RIDI vs Amazon Kindle: catalog facts
RIDI	Amazon Kindle
Free The viewer apps are free; books, webtoons and web novels are bought from the RIDI store.	Free The app is free; ebooks are purchased from the Kindle Store.
Windows, macOS, Android, iOS	Windows, macOS, Android, iOS
Apps for phones, tablets and desktop computers Covers ebooks, webtoons and web novels	Available on Windows, macOS, Android and iOS Direct access to the Kindle Store catalog
Only reads content from the RIDI store Desktop viewer is still a beta	Tied to Amazon's store and ecosystem Proprietary app
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 September 24, 2026

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