Interval Timer: Workout, HIIT

In-app purchases
4.5
3.08K reviews
100K+
Downloads
Content rating
PEGI 3
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About this app

All-purpose timer for activities like HIIT (High intensity interval training), Tabata, Fitness, Workout, Sports, Running, Cardio, Stretching, Yoga, Meditation, Boxing, Kickboxing, Circuit training and other interval training.

Features:
- Simple mode for quick configuration
- Advanced mode for custom timers
- Save own timer presets to start your workout right away
- Text to speech: Hear which exercise comes next
- Control the timer from notifications & lock screen
- Statistics: Set a weekly goal, track your progress, check your active days

Wear OS Companion App:
- Always keep an eye on your workout, right on your wrist
- Control the timer on your watch
- Record your heart rate throughout your workout and analyze your heart rate zones, training intensity and calories burned in the phone app
- Transfer your saved timers to your watch and train completely without a connected phone

Privacy friendly:
- No registration
- No ads
- No internet connection required
- All data is saved locally on the device

***** Important Note *****
Some devices (especially Huawei, Xiaomi, Samsung, OnePlus) have a very aggressive energy-saving mode. Due to this, background processes are quickly terminated. Therefore, it is necessary to disable the energy-saving mode for this app. Please note that further settings may also be necessary depending on the device.

Permissions:
- Phone status: The "Pause timer on incoming calls" feature requires the permission to read the phone status on Android 12 and above. If you want to use this feature, you can grant this permission in the app's settings.
Updated on
Sep 19, 2025

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.
No data shared with third parties
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No data collected
Learn more about how developers declare collection

Ratings and reviews

4.4
2.99K reviews
Carlos
October 15, 2021
So... looks nice, perhaps a bit barebones, but: advanced sets is a *BIG* no no. If, after 10-15 minutes inputting a series of sets, preparation, cool downs, times, you go save and THEN it says "hey, you have to pay to save more than 2 sets!", and then you press back and you lose everything, you lost a customer forever. Warn about it *BEFORE*. I'd rather have ads than lose my time stupidly because I didn't pay fast enough (and I wouldn't have minded, probably).
5 people found this review helpful
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MDev Mobile Apps
November 27, 2021
Hi Carlos, I have taken your feedback into account in the new version and added many additional features (e.g. copy & paste for fast and convenient configuration). It would be great if you give it a second try and let me know what you think. Greetings, Matthias from MDev
Szymon Harbuz
December 29, 2025
Remember when apps offered a single, simple functionality for free and only very timidly asked you to pay a very reasonable price for a reasonable set of extra funtionalities (read: not a GPT wrapper)? Remember when they didn't intentionally cripple the one functionality you actually need in order to sell you an expensive subscription? This is an old breed of app, and it works damn well. I don't need any of the extra features, but I subbed anyways, as a tip.
1 person found this review helpful
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MDev Mobile Apps
December 30, 2025
Hi Szymon, thank you very much for your kind words and your support. I really appreciate it. That's not something to take for granted these days. Best regards Matthias 🙂
Joel
December 16, 2025
Took a little messing around to figure out how to do what I wanted but now I can make heavy bag workouts with voice callouts. For example I make each exercise 30 seconds long, and every three of those exercises I add in a minute rest. Pretty straight forward. Also remember you can change the text to speech voice by changing it in your phone settings, because it's using whatever your phone already has set. Great app.
1 person found this review helpful
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What’s new

- Saved timers can now be transferred to the Wear OS Companion app. This allows you to train completely without a phone (phone and smartwatch app update required)
- Heart rate zones can now be displayed in the Wear OS app during training
- Adjustments for Android 15
- General improvements and bug fixes