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Simple Time Tracker vs SkillApp: catalog facts
Simple Time Tracker	SkillApp
Free Free and open source under the GPL-3.0.	Free Free and open source with no ads.
Android	Android
One-tap start for activities Statistics and history of past records	Fully offline with no internet access No ads or data collection
Android only Aimed at personal tracking rather than team timesheets	Android only Few features beyond timing skills
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	No account needed
Not stated if it works offline	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.