Intervals Pro: HIIT Timer

Intervals Pro: HIIT Timer

Running & Fitness Workouts

14K ratings
1085 reviews
Free
In-App Purchases

Details

Released
February 18, 2015
Updated
October 27, 2026

Features

Background Location Access

Intervals Pro: HIIT Timer screenshot #1 for iPhone
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Intervals Pro: HIIT Timer screenshot #10 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 about Intervals Pro

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+3

What's New in Intervals Pro

2026.11

October 27, 2026

NEW: SPLIT TIME ALERTS Hear elapsed time and split pace at your chosen frequency. Great for run fueling. FIXES & IMPROVEMENTS Additional iPhone Duo support. Includes a fix for a timer navigation issue for some iOS 18 users.

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Subscriptions & In-App Purchases

Yearly Membership

Annual access to all features

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

User reviews

Excellent workout tool

This has been reliably helping me keep fit for years. Happily the previous issue on older iPhones has been fixed.

Great app

Very customizable. Easy to use. Shares data with Apple Health

Complex Timing

A way to create complex workouts with varied timing is to treat every timed component as a separate interval, then name them as needed. I was able to create a workout that timed in minutes as follows: 2,2,2,2,2 (warm up, stepping up intensity) 5 (recovery) 1 (work) 1 (recovery) 1 (work) 1 (recovery) and so on, for a total of 10 repetitions. It takes a few minutes to configure this way, but I get exactly the intervals I want, and the text-to-speech feature guides me accurately through the workout with words of my choice. Nice!
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WARNING!

This app REQUIRES location data to run a simple timer! This is suspect, combined with the fact that there is no privacy policy for the app, a huge red flag! The only privacy policy listed only reports that it applies to the website it is hosted upon and has no mention of the app!

Awesome for long run intervals

I’ve been using Intervals Pro for 3 years and it’s been fantastic. I love that I can set different training intervals, depending on my training schedule.

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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.