5/5 rating based on 244 reviews. Read all reviews for Intensity Interval Timer for iPhone.
Intensity Interval Timer is free iOS app published by Atlantia Software LLC
A-Dubb21
I run/walk but get fatigued mid race. I was able to set 2 different interval sets during the same workout. Reached a PR using this method! I started Intensity on my phone and Activity on my Apple watch. Worked beautifully during my race. I wish there was a way to start both on my watch but that's not the app's fault.
Malu Freig
You can create your own workouts... like most of these apps, it stops if you open any other app...
Tiredofthesims
This is the best HIIT timer I've used so far. Much easier to program than others I have used. I just wish the songs imported from my personal playlist played in its entirety instead of changing with each round. I've used it for about a month and still like it. Would give it 5 stars if they fixed the music issue.
Zach Grove
This app gets the job done. My one nit-pick is that I wish there were more workouts in the 5-15 min range. It seems like a lot of them are either super short (4 mins) or 15 minutes+. Other than that, great app.
TooManyCards
It's a little confusing to get music other than from the app to work. It requires turning off of setting and re-opening the app. Works like a charm.
Nkerlick
I'm trying to set this up to use for Tabata, It's a bit challenging. I'm hoping I can figure out how to do it. The music part works well and you can customize any workout.