HIIT: Simple interval timer7.1.0 - App Store

Tired of tapping through menus before a run? Interval Running is a simple HIIT, tabata, and interval timer - say what you want, it builds the intervals, you run.

Just tell it what you want. Say something like "eight rounds, 30 seconds fast, 30 seconds easy" and the timer builds your program right then - no forms, no menus, no fields to fill in before you can start running.

Prefer to build it yourself? You can:
- Set work and rest by time, distance, or leave it open
- Choose HIIT, tabata, fartlek, tempo, or plain run/walk intervals
- Save a routine once, reuse it whenever you want

Everything you need is on the screen while you run, no extra taps.
- Interval, pace, cadence, and heart rate at a glance
- Audio cues tell you when to switch, no need to look down
- Full Apple Watch support - leave your phone at home

You don't want a training plan, a coach, or a program - you want a timer that starts and stops intervals exactly when you tell it to. You want to set up a workout on the way to the track without stopping to tap through screens. You do tabata or HIIT sessions and just need something that counts rounds. You run intervals on your own terms and don't want an app deciding your pace for you.

After each run, see your intervals, pace, and heart rate. Export GPX files, sync with Apple Health, and connect an external heart rate monitor if you use one.

Health app integration
With your permission, your interval runs count toward Activity Rings, including the Exercise and Move rings.

Say it. Start it. Run.

Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Version History Bug fixes and improvements 7.1.0 Sep 16 Voice cues. A real voice now announces each interval: its name, target, and distance or time, plus halfway, last-interval and finish cues. Works with your own interval names on iPhone and Apple Watch, with new audio modes so cues duck or mix with your music.

Live mirroring from Apple Watch. Start a workout on the Watch and follow it live on your iPhone. Pause, skip or finish from either device. Voice cues play through the phone.

Apple Health. Workouts and routes are saved to Health, and heart rate can come from Health-connected devices.

Better pace and distance. New GPS pipeline with smoothing and speed-adaptive pace filtering, plus current pace and a pace metric setting on the Watch. 7.0.0 Sep 6 Added small improvements 6.1.6 May 30 Bug fixes and small improvements 6.1.5 May 12 Bug fixes and small improvements 6.1.4 Apr 27 Fixed an Apple Watch app bug causing the "Interval changed" notification to hang. 6.1.3 Apr 15 Bug fixes and minor improvements 6.1.2 Apr 14 You can now track your heart rate zones during workouts 6.1.1 Apr 11 Bug fixes and small improvements 6.1.0 12/30/2025 Bug fixes and UI improvements 6.0.1 12/05/2025 You can now generate custom workouts using voice or text. Describe your run, and the app builds the intervals for you. 6.0.0 12/02/2025 Liquid Glass is here!
New pace, cadence and heart-rate charts.
Share your runs with beautiful social media images. 5.2.0 11/22/2025 Bug fixes 5.1.1 06/12/2025 Fixed bug with heart rate Monitors 5.1.0 06/09/2025 Our Apple Watch app is out now — track workouts from your wrist! 5.0.0 04/21/2025 Bug fixes 4.4.0 03/11/2025 Bug fixes 4.3.0 03/09/2025 Fixed bugs:
— Auto-switching for mile intervals
— Animation for the "Skip" button 4.2.0 03/03/2025 Fix crashes 4.1.1 12/22/2024 Added support for miles - Now you can track your runs in both kilometers and miles
Various bug fixes and performance improvements to enhance your running experience 4.1.0 12/10/2024 Bug fixes 4.0.2 06/10/2024 Bux fixes 4.0.1 05/10/2024 Bug fixes 4.0.0 05/05/2024 Bug fixes 3.1.0 04/21/2024 With the new Live Activity feature, you no longer need to unlock your screen while recording your runs on your iPhone! 3.0.0 04/02/2024