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Simple Time Tracker vs Working Time Account: catalog facts
Simple Time Tracker	Working Time Account
Free Free and open source under the GPL-3.0.	Free Free and open source under the GPL-3.0.
Android	Android
One-tap start for activities Statistics and history of past records	Calculates overtime automatically Tracks sick days, vacation and other absences
Android only Aimed at personal tracking rather than team timesheets	Android only Project pages are mostly in German
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
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.