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

Ratings and Reviews

4.6 out of 5

104 Ratings

104 Ratings

Very customizable!!


I have used this for nearly a year doing interval run training. I love that I'm able to add multiple workouts, customize high and low intervals, breaks, and warmup/cool down. The notifications are loud enough that I'm able to hear over my music or podcast, and the sounds keep me on track for training. It's easy to pause and restart as needed and I love that I can program multiple run interval times within the same workout. I just upgraded to the full version; I'm not really sure there's any difference aside from the lack of ads at the bottom of the screen. Still, I want to support the developer and laud the work put into this app. It does everything I need and runs seamlessly in the background while I run. It saves my workouts and gives me the option to share socially. I highly recommend this over other interval apps I've tried!

More sounds, please


Great app, I have been using it for years as a clock chime to count off time while I am working. I tend to focus too much and lose track of time. This app gently reminds me how much time I have left without interrupting the flow state. Gently is the key word. There only 1-2 sounds I can use, the rest are too jarring. And the trouble is I need to change the sounds periodically, because after a while I stop noticing them if I am too deep in thought. WOULD YOU KINDLY ADD MORE SOUNDS, which would be SHORT and PLEASANT. Or connect system own sounds. Thank you very much for considering. Wonderful app,otherwise, I use every day for several hours.

For everyone shape and size

Neon Bond

I have been using it for two to three years. I am not an athlete. But how I use is for a routine that I found from Pinterest and I apply this App.
For example: 20 min. Week 1: Walk fast for 4 minutes, walk regular for one. Week 2: run for one minute, walk for 3 five times. 20 min. And so forth. In the end( 12 weeks) you should be running for 20 min. This App let's you lead up to that.
I finally bought it because I used it soooo much. I am 53 years old! Love you can listen to music and easy to use. Never had issues.


Deltaworks Limited
19.5 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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