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Pomello vs Mater: catalog facts
Pomello	Mater
Free The developer states it is available for free on Mac, Windows and Linux.	Free Free and open source under the MIT licence.
Windows, macOS, Linux	macOS
Uses Trello boards and cards as the task list Minimal timer that takes little screen space	Unobtrusive menu bar interface Time can be adjusted by dragging while running
Built around Trello, so it suits people who do not use Trello less well Limited to the Pomodoro workflow	macOS only No published GitHub releases
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Account 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.