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 mmafightlab.blogspot.com

- 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 support@plainandsimplesoftware.com. 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

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

Ratings and Reviews


The best interval timer on the market for boxing

I have more than 20 years of experience as a boxing coach both professional and amateur. When I started there was a boxing timer, big mental box that looked exactly like the icon for this app. That timer was great, but limited. This app does everything I had hoped for and much more. If you are training yourself for a title fight or if you are a trainer you will not find a better app.

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


Scott Fritzinger
17.4 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Plain and Simple Software


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

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