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Simple Time Tracker vs Time Tracking: catalog facts
Simple Time Tracker	Time Tracking
Free Free and open source under the GPL-3.0.	Free Free and open source under the Apache 2.0 licence.
Android	Android
One-tap start for activities Statistics and history of past records	Automatic tracking through GPS geofences and NFC tags Day, week and month overviews
Android only Aimed at personal tracking rather than team timesheets	Android only Small project with few contributors
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: Apache-2.0
Not stated if an account is 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.