HIIT • Workouts & Timer 4+

Train, Sweat, Shred, Tabata

Fast Builder Limited

Designed for iPad

    • 4.8 • 30.7K Ratings
    • Free
    • Offers In-App Purchases



Get our HIIT Workout app to get results FAST!

Just 4 minutes of high intensity tabata intervals training will make you sweat and get your heart pumping.

Replace long cardio workouts with shorter and more effective HIIT workouts.

No equipment needed. Workout anytime, anywhere. No excuses.

• Scientifically proven short high intensity workouts to improve your health.
• Custom templates so you can build your own timers.
• Step by step instructions suitable for beginners and intermediates alike.
• Calendar and weight tracker to track your progress.
• Voice and video instructions. It's like having a personal trainer in your pocket.
• This app is integrated with Apple Health to track your workouts, calories and weight.

Free, quick and effective. What are you waiting for? Download the app, and get sweating!

7M - We heart fitness!


We offer the following auto-renewing subscriptions:
$29.99 per year
$2.99 per week

These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence.

The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. If you subscribe before your free trial ends, the rest of your free trial period will be forfeited as soon as your purchase is confirmed.

Read more about our terms and conditions here:
Terms of use: https://www.workoutinc.net/terms-of-use
Privacy policy: https://www.workoutinc.net/privacy-policy

What’s New

Version 5.5.3

Bug fixes and optimizations.

We're always looking for ways to improve our apps. Make sure to leave us a review and let us know what you would like to see next!

Happy sweating~

Ratings and Reviews

4.8 out of 5
30.7K Ratings

30.7K Ratings

EmeraldShay ,

Love this app!

I recently had a baby and I have neck problems. I’ve only been using it about a week but I’ve wanted something to help me to get toned after having my baby and give my muscles a good workout without over everting. This is a great app for me. I love that you can choose your workouts, they let you know the difficulty and length of each one and my favorite feature is that they show you what exercise moves you’ll be using AHEAD of time. This allows me to determine if a routine is suited for me before I find out after struggling half way through. Also the short break in between moves allows me to catch my breath and prepare for the next reps. This app has been awesome and challenges me to work up a sweat without over complicating things. Definitely recommend!

Jstarfit ,


So I downloaded this app a while back but was procrastinating with my fitness. Finally gave it a try and did the 15 minute beginners workout to burn 100 calories and boy can I tell you you def get a workout! It’s only 15 mins but you realize how out of shape you are lol you can def build up a sweat.

It’s nice because there are rest breaks in between each set and you can also pause when needed. This is good to help build up stamina and prepare for the other workouts available through the app.

Instead of wasting money on a gym membership I’d recommend trying this first and see how you feel. It’s nice because you can do these workouts anywhere you take your phone! You just have to stop being lazy and give it a try!

MorbidlyObeseMaggot ,

Great for quarantine

You can get a great workout at home without weights. I used to go to F45 but I’m not going back to any gym anytime soon with the pandemic raging. These workouts are great to do between my runs. I like the varying lengths offered so there is no excuse not to do a workout. I also love that it does not have any music of its own. It allows you to play whatever music you like while still hearing the voice prompts to rest or switch movements. I hope they add some workouts with commonly available free weights like 5-25lbs — or make another app for strength — that would really help us quarantine fitness fanatics.


Interval Timer X premium
Interval Timer X premium
Unlimited workouts and Interval Timer!
Free Trial
Interval Timer X premium
Interval Timer X premium
Unlimited workouts and Interval Timer!
Free Trial

App Privacy

The developer, Fast Builder Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Health & Fitness
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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