Interval Assistant: Timer

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Content rating
Everyone
100+
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Content rating
Everyone
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About this app

Interval Assistant is a powerful workout timer for HIIT, tabata, boxing, running and strength training — your ultimate companion to optimize every training session and reach your fitness goals. Set customized intervals for a wide range of activities, with full control over countdown, work, and rest durations for every exercise.

Track your progress over time with a built-in workout history and calendar: see every session you've completed, keep your streak going, and compare each workout to your last effort. Add a quick note after any session to remember how it felt or what to change next time. Get an estimated calorie burn for every completed workout based on your body weight and effort.

Built your perfect routine? Share it with a friend with one tap, or import a workout someone sent you — no account or sign-up needed.

Whether you're a seasoned athlete or just starting out on your fitness journey, Interval Assistant provides the flexibility and precision you need to tailor your workouts to your specific needs. The intuitive interface lets you effortlessly create, save, and reuse interval routines. A background timer with audio cues keeps you on track even with the screen off.

KEY FEATURES
- Custom work and rest intervals for any workout
- Presets for HIIT, tabata and EMOM
- Configurable sets and rounds
- Voice and sound alerts
- Workout history, calendar and streak tracking
- Estimated calorie burn per session
- Share and import routines — no account needed
- Background timer with audio cues, works with screen off
- Clean, intuitive interface — fully offline

Take control of your workouts, push your limits. Download Interval Assistant now and start redefining your fitness routine today!
Workout timer for HIIT, tabata, running, strength training. No sign-up, offline.
Updated on
Oct 28, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

Better audio cues during your workout.

- New setting "Countdown Before Next Interval": 3-2-1 beeps and the next interval announced in advance
- Voice cues now come right on time and no longer get cut off
- Louder beeps
- The voice stops as soon as you leave a workout
- The "+" button for adding exercises is now always visible in the editor
Content rating
Everyone
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App support

About the developer
Ohirchuk Mykyta
interval.assistant@gmail.com
Ukraine