Interval: HIIT & Tabata Timer

Now on Apple Watch. Start a workout on your wrist and it syncs live with your iPhone — pause, skip or end on either one and the other follows.

Interval is a fast, focused timer for HIIT, Tabata, EMOM, circuits, boxing rounds and any work/rest training you do.

Set your work, rest and rounds — or start from a ready-made preset — and press start. A big, glanceable timer with color-coded phases and audio, voice and haptic cues keeps you on pace without staring at the screen.

ON YOUR WRIST • A full Apple Watch app — start and run any of your workouts from your wrist • Live sync — start on iPhone and it opens on your Watch instantly, and the other way around • Pause, skip or end on either device and the other follows along • Haptic cues on every phase change, so you can train without looking

BUILT FOR TRAINING • Work, rest and rounds you control, with round rests between sets • Tabata, HIIT and EMOM presets to start from • A clean preview of the whole workout before you begin • Gym circuits, boxing rounds, sprint intervals, stretching, physio sets — anything that runs on a clock

STAY LOCKED IN • A large timer with color-coded WORK / REST phases • Two-tier progress: where you are in the round and in the whole workout • Audio beeps and an optional voice cue on every phase change and the last 3 seconds • Haptic feedback so you can train heads-down • Keeps running with the screen locked and in the background

LOCK SCREEN & DYNAMIC ISLAND • A Live Activity shows the current phase and countdown on the Lock Screen and in the Dynamic Island

YOURS, AND PRIVATE • No account, no sign-up • No tracking, no ads, no data collection — everything stays on your device

SIMPLE PRICING Use Interval free for up to 15 workouts with every feature unlocked. A single one-time purchase — Interval Pro — removes the limit forever and unlocks accent themes. No subscription, ever.

Questions or feedback? Email interval@klimakov.me