RoundClock: HIIT & Tabata

HIIT, Tabata, Boxing, CrossFit — runs in background even with screen off. Voice cues, custom workouts, Lock Screen Live Activity. 100% offline. Lifetime purchase availab…

The fastest interval timer for HIIT, Tabata, Boxing, and CrossFit. Runs in background — even with screen off. Voice cues, custom workouts, Lock Screen Live Activity. 100% offline. Lifetime purchase available.

WHAT YOU CAN DO

• FOUR PRESETS, ONE TAP Tabata (20s work / 10s rest × 8), Boxing (3min / 1min × 12), HIIT (45s / 15s × 10), and a Custom Workout builder. Tap and start training in three seconds — no setup, no account.

• RUNS IN BACKGROUND Lock the screen, switch apps, take a call — your timer keeps ringing on schedule. Works through Silent Mode, plays cues on AirPods and Bluetooth speakers, and never stops mid-round.

• VOICE CUES Hear "Work!", "Rest!", "Round 3", "Final round" through your headphones. No need to look at the phone — keep your eyes on form, not the screen.

• BIG NUMBERS, BOLD COLORS 200pt countdown digits at the center of the screen. Red for work, green for rest, yellow for get-ready. Phone on the floor next to the dumbbells? You can still read it from a plank.

• CUSTOM WORKOUTS Vertical-scroll wheel pickers for time and rounds — works fine with sweaty hands. Save unlimited workouts, name each interval ("Push-ups", "Squats", "Burpees"), build multi-stage routines.

• LIVE ACTIVITY + DYNAMIC ISLAND Lock Screen shows the current interval, round number, and seconds remaining. Dynamic Island keeps the timer visible while you switch apps or check Spotify mid-workout.

• HISTORY & STATS Every completed session is logged automatically. Weekly and monthly charts show total time, rounds, and streaks.

PRIVACY FIRST Everything happens on your iPhone. No accounts. No analytics. No ads. No third-party SDKs. Your workout data never leaves your device.

3-day free trial, then $1.99/week. Monthly, yearly, or lifetime options available. Lifetime is a one-time purchase, no renewal.

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