Interval Timer 4+

Plain and Simple Software

Designed for iPhone

    • 4.3 • 3 Ratings
    • $0.99

iPhone Screenshots


- Review -

"This seems like an amazing piece of software. Has the ability to edit round times, rest times, high intensity and low intensity sessions. It's exactly what I have been looking for, I can use it for running, free weights, mma, boxing or any type of interval training. Even CROSSFIT."
- by

- Description -

The Interval Timer was the first interval timer available in the AppStore and, as a result, the most refined. Don't be fooled by knock-offs (other developers copying our interface and layout)!

The Interval Timer is a fully functional interval training timer. It is now compatible with iOS 8.

It allows you to specify an overall workout time as well as a Low/High intensity interval and rest time between sets. During the set, it will alternate between the high and low intensity intervals helping to increase stamina. This is perfect for cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA, martial arts, circuit training, Crossfit, HIIT / HIT, etc.

IntervalTimer will run in the background, even if you switch to another App. It will also continue to run when the screen is locked.

The sound themes let you tailor the sounds to your desired activity. Don't like any of the dozens of preinstalled sounds? Don't worry! You can record your own sounds.

Asymmetrical intervals are easy to set up so it is easy to workout with Tabata intervals ("High Intensity" = work, "Low Intensity" = rest). You can set the intervals to the same duration for symmetrical intervals.

Working out to music is not a problem. Start you music playing in the iPod app, then start IntervalTimer. The sounds will play over top of your music without interrupting it.

If you have any request for a new sound theme or feature, or have problems with this App, please email We listen.

Interested in sparring? Check out our "RoundTimer" App. Want more control? Check out "UltraTimer". Want full programmability and randomized intervals? Look at "UltraTrainer".

What’s New

Version 7.2

This app has been updated by Apple to display the Apple Watch app icon.

- New look
- Fills iPhone X screen
- Fix crash when recording sound
- Fix crash when removing preset

Ratings and Reviews

4.3 out of 5
3 Ratings

3 Ratings

TriggerBrain ,

Solid app. Does what it's supposed to.

Great app. I do miss the last version's full screen tap to pause feature. The pause button is too small on an IPhone to easily tap the first time during a difficult workout with my fat, clumsy fingers.

Markw77 ,

Nice Timer

Wish it was Apple Watch compatible

crossfit guy ,

Great tool for the price!

I have used this tool several times for running and lifting weights, it is well worth the price. I have been wanting something like this since the iPhone came out in June 07. Works great while listening to the ipod also. Just some improvement ideas, it would be great to get an audio countdown warning at the end of the interval, like 5,4,3,2,1. I am guessing that might be hard to do and keep the ipod playing in the background. The option of total time or total number of intervals would be great (just to avoid having to do math on the trail) Now just add a GPS, Pedometer and the ability to download and sync your results and you will put Polar out of business :-)

App Privacy

The developer, Plain and Simple Software, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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