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

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