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Tabata Xtreme vs TimeR Machine: catalog facts
Tabata Xtreme	TimeR Machine
Free This open-source edition is free and ad-free under the MIT licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Every interval length is configurable Saved presets for repeat workouts	Multi-stage timer plans Useful for workouts and non-workout tasks
Small project with few contributors Only for timing; no workout logging	Android only Many options can take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
No 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.