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Clocker vs Dato: catalog facts
Clocker	Dato
Free Available from the Mac App Store.	Paid One-time purchase on the App Store with updates included.
macOS	macOS
Unlimited time zone clocks with custom labels Time scrubber for planning meetings across zones	Calendar, events and world clocks in one menu bar item Fullscreen meeting notifications
macOS only Calendar features depend on Apple Calendar	macOS only Paid app
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.