Intervals Pro: HIIT Timer

Intervals Pro: HIIT Timer

Running & Fitness Workouts

14K ratings
1053 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 18, 2015
  • July 21, 2026

Features

Intervals Pro: HIIT Timer screenshot #1 for iPhone
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About

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

Highly customizable intervals (time/distance)
Spoken interval names and prompts
Standalone Apple Watch workouts
Workout history with Apple Health
Home screen widgets for quick launch
Bluetooth heart rate monitor support
Siri Shortcuts integration
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What users say

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What's New in Intervals Pro

2026.7

July 21, 2026

Restart the current interval quickly on iPhone and Apple Watch. Improvements to Strava upload and the 3-second countdown before the workout starts on Apple Watch.

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Subscription plans

Yearly Membership

Annual access to all features

$19.991 Year
7 Days trial
How to cancel Intervals Pro subscription ⁉️
1

In-App Purchases

$0.99

Generous Tip

Thanks for helping fund Intervals Pro!

User reviews

Intervals Pro: HIIT Timer

I’ve been really disappointed in the past with other interval timers, sometimes needing 2 or even 3 different apps to do what I want/need. Intervals Pro: HIIT Timer gives me everything I want/need plus more. It is so easy to set up/customise and the level of detail when summarising your workout is amazing. As you can maybe tell, I would highly recommend 👍🏻
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iOS 16 Support is back!

Thank you for restoring support. I use this for a lot of “exercise snacks” throughout the day!

Intervals used to work but now adds more time

I was using this app with its original settings of 3 minutes fast and 3 slow and it would tell me when each sessions started and stopped but now it keeps saying adding extra time to each interval and counts up. I can’t get it fixed and have asked for help. I paid for the app too

Great for HIGH INTENSITY INTERVAL TRAINING (HIIT)

HIIT is the way to go for fitness for the maximal benefit for the minimal time, and you can combine short bursts of cardio with short bursts of weight. You can designate intervals and rest periods as you like, designate number of intervals or overall time, and can make anything in your home work with this. I have weights, a few pieces of cardio equipment, and do yoga, so can loop around the equipment I have at home with maximal effort and short rest periods and get an excellent workout in 30 minutes. Works in a gym also if you are willing to move to any available piece of equipment or you work out at an unpopulated time. I paid for the upgrade to do this and it is so worth it. It transfers workouts to Apple Fitness seamlessly. Great motivator if you are starting out again!
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Best intervals app

By far the best intervals app out there. Allows the most flexibility. Voice cues so you can focus on workout. Can mix time and distance. Better than the interval function on dedicated sports watches I have tried. On par or better than general workout app at a better price while not trying to sell me shoes that sync with my phone. Only suggestion I would have is to prove a total at the end of a workout for each interval. Each interval is listed with stats, but I imagine it wouldn’t be too hard to provide list the totals for the different intervals.
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User experience

🐞

Reported Bugs

2 issues

Workout data not syncing correctly

Bug

App crashes or freezes on certain devices

Bug

Requested Features

3 requests

More customization options for interval displays

Feature

Ability to batch delete or manage workout history

Feature

Integration with more third-party fitness apps

Feature

FAQ

What does Intervals Pro do?

Intervals Pro is a highly customizable interval training timer designed for a wide variety of workouts, including HIIT, running, strength training, yoga, and more. It allows users to create personalized routines with specific durations, alerts, and goals.

What are the key features of Intervals Pro?

Key features include highly customizable intervals based on time or distance, spoken interval names and prompts, standalone Apple Watch workouts, integration with Apple Health for workout history, home screen widgets, and support for Bluetooth heart rate monitors.

How is Intervals Pro priced?

The app is available for free with in-app purchases. This model allows users to try out basic functionalities before deciding to unlock premium features or content.

What devices is Intervals Pro compatible with?

Intervals Pro is designed for iPhone, Apple Watch, and iPad. It offers a standalone experience on the Apple Watch, allowing users to leave their iPhone behind during workouts.

What types of workouts can I use Intervals Pro for?

This app is versatile and can be used for numerous workout types, such as HIIT, running, strength training, yoga, stretching, circuit training, boxing, MMA, elliptical, rehabilitation, meditation, and 7-minute workouts.