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Smart EggTimer vs Fossify Clock: catalog facts
Smart EggTimer	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
Adjusts cooking time for altitude or air pressure Considers egg size, start temperature and desired consistency	Alarm, stopwatch, timer and widget in one app Gradual alarm volume and adjustable snooze
Single-purpose app for boiling eggs Android only	Android only Covers standard clock features rather than advanced sleep tracking
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
No account needed	No account needed
Not stated if it 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.