Train with clarity
Interval Timer: HIIT, Tabata & Boxing
One app for rounds, rests, prep, and warnings — with voice guidance, presets, and a timer screen built to stay readable when you are out of breath.
Whether you are doing Tabata, HIIT circuits, boxing rounds, or a fully custom interval, Interval Timer keeps the flow obvious: what phase you are in, how much time is left, and what comes next.
See it in action
Phase-first UI
Prep, work, warning, rest — always know what phase you are in at a glance.
Voice & Audio Cues
Spoken countdowns and distinct bell/alarm sounds so you never have to stare at the screen.
Apple Watch
Companion app with presets, quick edit, and standalone timer — always on your wrist.
Key features
Boxing, Tabata, HIIT, intervals, gym-style timers, and custom circuits.
Countdowns and phase callouts in 6 languages.
Save common protocols, start them instantly.
Track rounds, durations, and progress over time.
Timer on Lock Screen & Dynamic Island. No need to unlock.
Load your own bell and warning sounds (Pro).
Chain exercises with individual durations and rests.
7-day free trial on subscriptions. Lifetime is a one-time purchase. Free tier with ads.
Why Interval Timer?
Training apps should disappear while you train — until you need them. Interval Timer is tuned for high-contrast readability, quick edits between rounds, and flows that match how coaches actually run circuits.
- Clear structure for every phase of the round
- Fewer mistakes when switching work / rest
- Built for HIIT, boxing, functional fitness, and general conditioning
- Audio ducking — lowers your music during cues, then brings it back