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Interval Timer vs Exercise Timer: catalog facts
Interval Timer	Exercise Timer
Free Free and open source under the MIT licence.	Free Free and open source under the GPLv3.
Android	Linux
Quick setup of active and rest times Minimal, easy interface	Saved presets for sets and interval lengths Audible cues before and at each transition
Basic feature set Android only	Timer only, with no workout logging or history Linux desktop only
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	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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