***Free and reliable. Perfect for use at home, at the track or in the gym.

We’re proud to introduce this handy little app that helps you keep track of your work and rest periods during workouts. Whether your into cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA or HIT, this interval timer will prove to be an invaluable asset to you.

Running foreground, background or with device locked, this reliable app allows you specify an overall time as well as program High/Low intensity interval and rest time between sets.

Key Features:
- Customizable sets, high/low intensity interval and rest for your own need
- Retina display, iOS4 and multitasking
- Continue to run even when screen is locked
- Play your song or playlist during your workout
- Post your workout to Facebook or Twitter
- Save settings as templates

Customizable Features:
- Number of Sets
- Countdown Time
- Set Time
- Low Interval time
- High Interval time
- Rest Time
- First Interval (low or high)
- Sound Volume
- Timer Sounds
- Auto Lock
- Vibrate
- Pause during Rest
- Playlist
- New Each Set

What's New

Version 4.1.1

- Crash fixes
- Fixed music issue
- Minor bug fixes

Customer Reviews

4.5 out of 5

708 Ratings

708 Ratings

Great App!


I've used several different timing apps and they all had the same flaw, no ability to save a routine for continued/repeat use. This app makes it easy to set different timing schedules for those who workout and need different rest/routine times. I also like that it gives you the ability to see/graph your workout times in a monthly/weekly format. (Good to have to keep track of whether or not your "skipping workouts)

Unlike some of the other people who have posted I've never experienced the app freeze and I use it every day for 3 different types of workouts. (Maybe it conflicts with their other apps, or they have low memory?)

Like Ron Popeil says "Set it, and forget it"

It just works


I have downloaded so many interval apps looking for something to help me hold stretches longer. This is the best so far. Perfect. <edit> - 5 years later. Still love it. Still use it.

It would be great if the description outlined the difference between the free version and pro. I can't tell the difference.

Also the timer sounds are pretty bad. It would be awesome if there were a simple "ding". The current options are too loud, too long, jarring, aggressive. I use the tweeting one because it's more soothing but it's lime 5 seconds long! No bueno

Not happy with the update

Diamond Snowflakes

I do like how easy this is to use and how customizable it is. I do wish, though, that there was more variety in the color options to differentiate between workouts, and I was using the feature where it saved the last workout you did and that was the first thing you saw when you opened the app. Now it starts back at the beginning, and I have to go into the calendar to see what workout I did last. Also, the color in the drop-down list does not match the main color of the workouts I do, so it's even harder to track my workouts in the calendar. The new update has decreased the simplicity and efficiency of the app. 😡


Deltaworks Limited
23.4 MB
Health & Fitness
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2010-2017 Deltaworks


  • Family Sharing

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

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