HIIT IT is a simple, completely free interval timer for your HIIT workouts. High-intensity Interval Training is a fantastic way to get a workout from home, the gym, or anywhere outdoors.

HIIT IT is customizable to fit your workout needs. A simple design to easily adjust your exercise and rest intervals or the number of sets in your workout.

HIIT IT integrates with Apple Heath (on available devices) to give you full credit for all your hard work.

Best of all, HIIT IT is completely free. No in-app purchases or hidden features. We set out to make the best interval timer for everyone to use. We hope you enjoy it!

Get fit using our app today!

What’s New

Version 3.0.5

Spoken countdowns are back! Thanks for all your feedback.

If you'd like to see more audio settings, or anything else, drop us a note to

Ratings and Reviews

4.7 out of 5
107 Ratings

107 Ratings

SimonLMiller ,

Clean, Simple, The Best Workout Timer and FREE

I love this... I have gone thru SO many workout timers... This one is by far the quickest to program, it retains your last program when you start a new session, and most importantly, it has a human voice option for countdowns! My only wish is that the designers could give us some options as to the look, color pallette, and font... I could see this app having a few really awesome skins: like "vaporwave" or "midnight" or maybe "Roller Disco" -that would be the icing on an already lovely cake!

Developer Response ,

Wow, thanks for the kind words! Love the idea of fun skins! We have a bunch of exciting updates coming in the next release, we’ll have to design up some skins to follow. Let us know if there is anything you’d like to see:

LowKeyShop-aholic ,

I love this timer

This is just what I have been looking for. I started the new year like everyone else trying to get back into shape. I love my apple watch but constantly checking my watch to see when 45 seconds has passed was distracting from my workout. With this app you simply set the timer for the intervals to move, rest, and program how many sets you want to do and BAM... not worried about time, just free to perform.

Gabsxxxxzz729 ,

Gives you time to move from one stretch/exercise to another

My favorite thing about this app is that I can use the rest period to move onto the next exercise. Some of the floor stretching I do takes a few seconds to move onto the next position, and this app is perfect for that!

Developer Response ,

Thanks! We have a bunch of exciting updates coming in the next release. Let us know if there is anything you’d like to see:

App Privacy

The developer, Buster Labs LLC, 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 Not Collected

The developer does not collect any data from this app.

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


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.