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