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Clocker vs Clock: catalog facts
Clocker	Clock
Free Available from the Mac App Store.	Free Free and open source under the GPL-2.0 or later licence.
macOS	Linux
Unlimited time zone clocks with custom labels Time scrubber for planning meetings across zones	Alarms, timers, stopwatch and world clock in one app Alarms can wake the device from suspend on Plasma
macOS only Calendar features depend on Apple Calendar	Wake-from-suspend works only on Plasma Linux only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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