Compare software

Privacy Friendly Interval Timer vs GDF HEMA Timer: catalog facts
Privacy Friendly Interval Timer	GDF HEMA Timer
Free Free and open source under the GPL-3.0 licence, with no ads.	Free Free and open source under the GPL-3.0.
Android	Android
Configurable exercise and rest timers Daily, weekly and monthly training statistics	Large display that is readable during training Configurable rounds
Android only Calorie figures are estimates based on MET values	Small project with a single developer No formal releases on GitHub; installed through F-Droid
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account needed	Not stated if an account is 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.