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Version
1.0.18
Size
56 MB
First release
Nov 2, 2026
Category
Sports
Description
from the App Store listing
Interval Timer by STRNTH is a free interval timer for HIIT, Tabata, EMOM, AMRAP, boxing rounds, running intervals, stretching and more. Build any timer you want with no fixed structure, then run it hands-free and read it from across the room.
BUILD ANY TIMER
- Add as many steps as you like, each with its own label, duration, color, sound and voice.
- Group steps into repeat blocks so a round loops as many times as you need.
- Link separate timers together to chain a warm-up, workout and cool-down into one session.
- Start from a template: Couch to 5K, Tabata, HIIT, 7 minute workout, EMOM, AMRAP, boxing rounds, Pomodoro, box breathing and full body stretch.
RUN IT HANDS-FREE
- A giant readout inside a progress ring, sized to read from across the gym.
- Full-screen color per step so you know your phase at a glance.
- Voice reads each step and announces what is next before it arrives.
- Sound cues on the last three seconds, plus beep, go, switch, rest, bell, horn, gong and whistle tones. Import your own sounds too.
- Optional spoken 3-2-1 countdown, a cadence metronome from 60 to 180 BPM and haptic feedback.
- An optional get-ready countdown before you start, from 3 to 30 seconds.
- Choose what the screen shows: interval time, total time, interval count, the clock or heart rate.
MORE TOOLS
- A countdown tab with saved presets for a fast single timer.
- Workout reminders on the days and time you choose.
- A stopwatch with laps that highlight your fastest and slowest split.
- Workout history that logs every session so you can look back and run any timer again.
- Light and dark themes and your own custom step colors.
- Share a timer as a link or a file, and import timers others send you.
ON THE BIG SCREEN
- Show a running timer on a TV with AirPlay, Chromecast or a wired adapter.
- Your phone stays the controller while the big screen stays in step.
ACROSS YOUR DEVICES
- An Apple Watch companion runs your timers on the wrist with color and haptics.
- Pair a Bluetooth heart rate strap to see live BPM, zones and more while you train.
- Save finished sessions to Apple Health as workouts.
- Back up your timers to your private iCloud.
FREE, WITH A ONE-TIME UPGRADE
Interval Timer is free and supported by ads. One payment removes ads for good. No sign up, no accounts and no subscriptions. Your timers stay on your device.
Part of the STRNTH family of training apps.
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Interval Timer by STRNTH
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Interval Timer by STRNTH
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