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