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Openshelf vs Bookaccio: catalog facts
Openshelf	Bookaccio
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0.
Android	Android
No account and data stays on the device Flexible organisation by category, collection and imprint	Book search through the Google Books API Reading progress tracking
Android is the supported platform No cloud sync between devices	Book search depends on the Google Books API Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0-only
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.