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Google Play Books vs Koodo Reader: catalog facts
Google Play Books	Koodo Reader
Free Free to use; ebooks and audiobooks are bought individually.	Free Free and open source under the AGPL-3.0.
Android, iOS, Web	Windows, macOS, Linux, Android, iOS, Web
Reads and plays books in a web browser as well as on mobile Ebooks, audiobooks, comics and textbooks in one library	Over fifteen formats including EPUB, PDF, MOBI, AZW3, comic archives and DOCX Syncs through storage you already control rather than a vendor cloud
Requires a Google account Purchases are tied to Google's store	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
Downloadable app, Web application	Downloadable app, Web application
Closed source	Open source
License not stated	License: AGPL-3.0
Account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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