The Gymboss Interval Timer app is a programmable interval timer perfect for any workout where timing is needed to time work and/or rest periods. You can time a single time interval, or multiple time intervals, and repeat them as many times as you wish. Perfect for running, HIIT, tabata, crossfit, home workouts, mma, boxing, weight lifting, stretching, or any other workout that requires timing.

This app incorporates all of the recommendations we have received over the years from our users to bring you the best app possible. Thank you for your input!!!

Customizable Features:
- save programs to your iCloud Drive account
- unlimited intervals
- up to 99 rounds/repeats
- unlimited saved programs
- music access directly from the app
- music dims for alarm
- multiple alarm sounds
- visual, audible, and vibrate alarm options
- social sharing options
- prevent sleep feature
- screen lock
- customizable, moving background colors
- large, easy to read display
- landscape mode option
- set different alarms for each interval
- change the end of program alarm
- label activity names for each interval to be displayed
- built in stopwatch
- ability to make rounds box bigger or smaller
- copy an entire program option

What's New

Version 3.0.1

Bug Fixes

Ratings and Reviews

3.2 out of 5
14 Ratings
14 Ratings

Like it


Long time user of GymBoss I just really like the simplicity and ease of use, the cues are nice and all but the only thing I need from this app to be full 5 stars is an Apple Watch app or compatibility. But I still like it a lot.


First time google cal user

Your May 27th update has resulted in the app automatically lowering the sound volume (3,2,1 countdown) on my iPhone 6s Plus. I know it's the app because I turned up the volume to full repeatedly while during my workout (and using the app) only to watch the app turn the sound volume done repeatedly. Please fix. I do love your app.

All around bad stuff


Shuts off during a session. Won't open a timer most times upon opening. Need to clear most or all open apps to use. Seems like I need to open and close twice before it allows me to use a timer. iPhone 6 Plus had been around too long to be experiencing issues.


Gymboss LLC
33.2 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Gymboss, LLC
In-App Purchases
  1. Remove Ads $0.99
  2. Sound and Color Bundle $0.99


  • Family Sharing

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

You May Also Like