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Futon vs Usagi: catalog facts
Futon	Usagi
Free Free and open source under the GPL-3.0 licence, with no ads.	Free Free and open source under GPL-3.0-only.
Android	Android
Over 1000 manga sources plus Tachiyomi keiyoushi extensions Chapter downloads for offline reading	Built-in tunnels to reach sources behind firewalls Several interface styles, including Modern and Classic
Android only Relies on third-party sources that can change or break	Android only Content depends on third-party online sources
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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.