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Sobuu vs Openreads: catalog facts
Sobuu	Openreads
Free Free and open source under the Apache-2.0 licence, with no ads.	Free Free and open source under the GPL-2.0 licence, with no ads.
Android	Android
Page-by-page reading progress and reading time Comments tied to a page so others avoid spoilers	No ads and no tracking Separate lists for finished, current and planned reading
Android only Social features depend on other readers using the app	Tracks books rather than reading them No social or community features like those of Goodreads
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-2.0
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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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