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Koodo Reader vs Apple Books: catalog facts
Koodo Reader	Apple Books
Free Free and open source under the AGPL-3.0.	Free The app is free; ebooks and audiobooks are bought individually with no subscription.
Windows, macOS, Linux, Android, iOS, Web	macOS, iOS
Over fifteen formats including EPUB, PDF, MOBI, AZW3, comic archives and DOCX Syncs through storage you already control rather than a vendor cloud	Ebooks and audiobooks in a single app Reading position syncs through iCloud
It reads DRM-free files only; books bought from a store with DRM will not open Sync depends on whatever storage you configure, so the setup is on you	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 20, 2026	Official website Full listing and sources Checked September 23, 2026

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