Refreshing the page resets the interval session; progress is not saved.
Round 1 of 8
It alternates between work and rest periods for a set number of rounds. Common for HIIT, Tabata, or timed exercises.
Yes. Set work (seconds), rest (seconds), and number of rounds in Settings. Optional sound plays between phases.
Yes. No sign-up. Runs entirely in your browser.
No. Refreshing or closing the page resets the interval session; progress is not saved.