Pacer Fitness - Interval Timer 4+

Boost Your Workouts

Bright Mediums

    • 4.7 • 300 Ratings
    • Free
    • Offers In-App Purchases



Using an interval timer is the best way to get the most out of your fitness time. Whether training for a sport or working toward specific fitness goals, interval training is a proven method to help you achieve your goals.


Timer visualization displays the entire timeline of your workout with color-coded interval bars that transition from right to left as you exercise. Timer screen works seamlessly in portrait and landscape.


Intuitive gesture controls empower you to make and share timers in mere seconds, not fumbling through multiple screens. Swipe up and down to change duration. Tap and swipe up and down to increase or decrease intensity. You can name each interval to match your exercise.

Apple Watch® Support
• Timers are automatically synced from your phone to your watch any time you create, edit, re-order or delete timers from your iPhone®
• Watch settings are just a swipe away. Swipe right from any open timer to access settings.
• Integration with Health and Activity (see "Sync with Health" from settings on the watch app)
• Full interval alert options with haptics & sound options including: Melodic, Arcade, US English (female) & US English (male)


Pacer supports deep linking and timer sharing. Open a timer and tap share to send to a friend via AirDrop®, your favorite messaging app or share with your followers on social media. Recipients with Pacer will be able to open and save your timers to their devices.


Pacer knows when you are holding your phone and when you set it down. With Autostart enabled, once you open a timer just set it down to start it. Pick it up again to pause. Visit Settings in the app to enable Autostart.


Play music from your favorite music app with no interruptions. Pacer will play audio cues over your music and you can even adjust the volume independent of your music volume. No matter what music you’re listening to, the audio cues won’t be too loud or too quiet.


If you’re new to interval training, check out our featured workouts. Pacer can be used for many different fitness disciplines, so take a peek at what the pros are doing.

- On Timers screen, swipe left on any timer to expose share, edit and delete

- Long press a timer and then drag-and-drop to customize timer position

Pacer is created and maintained with the help of a NASM™ certified personal trainer.

What’s New

Version 3.8.1

Bug fixes for Settings from running timer.

Ratings and Reviews

4.7 out of 5
300 Ratings

300 Ratings

Todd 1 ,

Great app great help

The app is top but the guy who developed it is even better. I was asking for help by email about some functionality and he spent a lot of time by email with immediate responses and was very helpful. Nothing wrong with app, just some things I needed answering about music and how the interval works. Highly recommended.

djbigboy ,

Intervals are Strangely Broken in Plus

A single set can be loaded with as many intervals as you want, but the app will not run any intervals in a set beyond the eighth one, e.g., if your workout has one set with 10 intervals, the workout will “complete” after the end of the 8th interval and simply ignore the 9th and 10th. There are other problems as well. Even the example workout that is loaded with Plus is broken — it’s supposed to be three sets of two intervals, but it ignores the second interval on the third set when it runs. It’s the example workout, you’d think that at least that one would work correctly. It gets a second star however for its clean design.

Developer Response ,

Hi there,

Please contact us at and we will be happy to make sure your issue gets resolved. Please not that any final intervals that are rest intervals will not run on the last set. This is a feature, not a bug.

I assure you we have tested all the timers in the sample timers section and they function as intended. If you are experienced issues beyond what is outlined here, it might be due to specifics of your phone and or configured timer. We will be happy to work with you to resolve it swiftly if you contact us.

Thank you for using Pacer.

tgbyhnjkl ,

Death of a good app

The app will no longer run in the background or when the screen is locked. The counter still counts but the noises stop so I don’t know when my interval is up. Since I can’t hear the noises with the screen locked I have to workout with the screen unlocked. This causes my phone to constantly switch to viewing ads in safari if the screen accidentally gets tapped. Used to love this app now it’s basically useless as it doesn’t work properly if the screen is locked or if another app is open. I used to watch Netflix while doing elliptical intervals and that is no longer possible since the app doesn’t work if another app is open.

Developer Response ,

Thanks for reporting your issues.

We have spent the past day testing backgrounding and screen off scenarios with a limited number of devices. The app performed as expected. Please email with your device information and we will make sure to get this fixed.

In-App Purchases

Unlock Pacer Plus
Access featured workouts, save custom timers

App Privacy

The developer, Bright Mediums, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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