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Fossify Clock vs QRAlarm: catalog facts
Fossify Clock	QRAlarm
Free Free and open source under the GPL-3.0, with no ads.	Free Free and open source under the GPL 3.0.
Android	Android
Alarm, stopwatch, timer and widget in one app Gradual alarm volume and adjustable snooze	Alarm can only be dismissed by scanning a code Works with QR codes and barcodes
Android only Covers standard clock features rather than advanced sleep tracking	Android only You need a printed or placed code to scan
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.