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Fossify Clock vs Clock You: catalog facts
Fossify Clock	Clock You
Free Free and open source under the GPL-3.0, with no ads.	Free Free and open source, with optional donations.
Android	Android
Alarm, stopwatch, timer and widget in one app Gradual alarm volume and adjustable snooze	Alarm, timer, stopwatch and world clock in one app Several Material You home-screen widgets
Android only Covers standard clock features rather than advanced sleep tracking	Android only Fewer advanced alarm options than some stock clock apps
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	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.