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Time Sink vs arbtt: catalog facts
Time Sink	arbtt
Paid $5 with at least a year of updates and a perpetual license; free trial available.	Free Free and open source under the GPL-2.0 licence.
macOS	macOS, Linux, Command line
Automatic tracking per app and per window Pools group related activity	Fully automatic capture with no manual input Rules applied at query time so old data can be re-analysed
macOS only Tracks one Mac, not a team	Requires writing a rules file to get useful statistics Command-line only, no graphical reports
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
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.