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Mater vs AS Timer: catalog facts
Mater	AS Timer
Free Free and open source under the MIT licence.	Free Free; a paid AS TimerPRO version is also available.
macOS	macOS
Unobtrusive menu bar interface Time can be adjusted by dragging while running	Very simple scroll-to-set countdown Can be started from Terminal or AppleScript with arguments
macOS only No published GitHub releases	Mac only Command-line options only apply when the timer is first launched
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it 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.