The best interval timer app for IOS just got even better! Downloaded by over 100,000 awesome people just like you, Intensity is the workout companion you’ve been looking for. 

*** Now with Siri integration all new for iOS 11 ***

Before we tell you more, have a look at what people are saying:

“This makes HIIT effortless. You don't have to think about what songs to play or how many intervals you have done, it does it all for you.

“I downloaded this app to help with home tabata workouts and it is just what I was looking for. I love having my own playlist to keep me going through a tough workout!”

“What more could you want then your own personal music & timers to keep you moving!”

You love HIIT because it’s a quick workout style that you can easily fit into your daily routine. We agree, and would hate to see you squandering your valuable time screwing around with a lame, hard to use timer app. That’s why we built a workout timer so easy to use, even your technology-challenged family member of choice would adore it.

Download and get started in seconds with built-in curated workouts. Go deeper with the flexibility of the best workout builder on the app store, adding your own custom intervals, rests, warm-up/cool-down,  caloric burn, and music selection. Speaking of music, have it your way with tunes from your own music library or use music from other apps, Intensity runs in the background so you can continue your routine even while using other apps or putting your device to sleep. Subtle sound queues and text-to-speech interval  announcements will guide you through each workout. And of course, we know how important it is for you to make progress towards your fitness goals, so we’ve added a workout log as well as easy integration with the iOS health app.

Intensity - Your workouts, your way. 

What's New

Version 10.0.2

This release fixes a number of issues with music playback in the latest version of iOS. If you continue to see any issues, please get in touch with us and let us know.

As always, if you enjoy the app, please consider rating us on iTunes.

Ratings and Reviews

4.5 out of 5
593 Ratings
593 Ratings

Makes workouts easy + quick


I LOVE working out and forming my own training sessions, but most of the times it’s a huge hassle to set up a timer and stay motivated. This HIIT timer is easy to set up and customize, and allows you to listen to music while working out. The app tells you what move is next, how much longer you have, and counts down the last five seconds of each move- life saver!!! It also tracks what days you workout/don’t (rest days rockkk) and gives you several workouts for FREE when you download. No reason not to!! Plus workouts are super fast but leaves you with a burn for several days! Highly recommend!!

Keeps you moving


I really have enjoyed this app. Something's I'd like to see improved or changed:
-ability to skip or go back to potions of workout
-more user friendly when navigating. I feel like there is a lot of unnecessary toggling.
-better preloaded workouts. I appreciate the help, but they are just run of the mill exercises that don't really push many intermediate/advances exercises. All and all, I'm happy with it.

Love this app but....


I honestly believe this would be the best interval app in the store. However, it requires you to have your phone to us it. It adds a app on the Apple Watch but It merely serves as a remote for controlling the app on your phone. Including the ability to sync your intervals to your watch would do wonders for this app. Fix that one major flaw and it’s easily a 5 star app.


Atlantia Software LLC
52.6 MB
Health & Fitness
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German
Age Rating
Rated 4+
© 2017 Atlantia Software LLC
In-App Purchases
  1. Premium Upgrade $1.99
  2. Intensity Pro Upgrade $4.99
  3. Mega Pack $3.99


  • Family Sharing

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

  • Siri

    Get things done within this app using just your voice.

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