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Interval Timer vs TimeR Machine: catalog facts
Interval Timer	TimeR Machine
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Quick setup of active and rest times Minimal, easy interface	Multi-stage timer plans Useful for workouts and non-workout tasks
Basic feature set Android only	Android only Many options can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
Not stated if an account is 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.