# Interval Timer - HIIT Builder — Custom Interval Timer Workouts

> Customizable interval timer for HIIT, Tabata, and personal training workouts. (iPhone/iPad app by Curtis Wichern.)

- Source: https://appshunter.io/ios/app/interval-timer-hiit-builder/id1545032846 (this page in markdown: same URL + `.md`)
- Developer: [Curtis Wichern](https://appshunter.io/developer/1545032848)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 4.58/5 from 12 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 5 MB
- Languages: English
- Released: 2021-01-23
- Data updated: 2026-07-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/interval-timer-hiit-builder/id1545032846/reviews.md

## What is Interval Timer?

Use HIIT Builder as an interval timer to manage your High Intensity Interval Training to maximize your fitness. Create custom interval workouts from a basic HIIT template or use our ladder and pyramid templates to energize your personal training. All your workouts are stored on your device. There is no need to create an account. We don’t show ads.

If you enable it, HIIT Builder will automatically log your workouts in HealthKit for review in Health App or Fitness App. Additionally, you can enable HIIT Builder's Apple Watch app to show your heart rate and calories burned during a workout.

You can share interval workouts with friends and family via email and AirDrop. You can also download HIIT Builder interval workouts for free from our website. We add new interval workouts regularly.

HIIT Builder is a great interval training app for home workouts or workouts at the park. You can create Tabata workouts or any HIIT workout of your choice. The ability to customize any interval workout to your needs allows you to take control of your fitness using HIIT Builder as an interval timer.

HIIT Builder uses large fonts and contrasting colors to make it easy to see where you are in an exercise in your interval workout. You can customize how HIIT Builder tells you that an interval is coming to a close. The app can countdown to the end of an interval or it can ring bells.  You can have the app speak the name of the next exercise. You can also have the app flash the screen when transitioning between interval exercises.

Each interval workout can be completely customized. You can have each exercise interval be the same length or you can modify each interval’s length to get exactly what you need from the exercise.

Create as many interval workouts as you want. Search through your personal workout library to choose which workout you want to do.

When iCloud is enabled, you can create workouts on your iPad and see them show up in your iPhone’s HIIT Builder workout library.

Download HIIT Builder and get a free, no obligation, trial of all features for two days.

Thoughts, concerns, suggestions? We're always trying to improve. Please email us at info@hiitbuilderapp.com

## Key features

- Custom interval workout creation
- Ladder and pyramid templates
- HealthKit integration
- Apple Watch app for heart rate and calories
- Workout sharing via email/AirDrop
- Large font and contrasting colors
- Customizable audio and visual cues

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly Subscription | $2.99 | per year |
| Monthly Subscription | $0.49 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Forever | $7.99 | one-time |


## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/interval-timer-hiit-builder/id1545032846/reviews.md

### 5/5 — Day 2

*2026-01-03*

This is my second day and I am so HAPPY! I have been searching for 2 weeks for an app like this.  THANK YOU

### 5/5 — Easy to Use

*2025-10-08*

I’ve been using this timer for over a month now and it’s been great and no problems at all. I can create multiple workouts with different intervals and add the names of the exercise if needed. 

The only improvement that I would like to see added is a countdown timer letting me now how much time is left. When you create a workout, the total time is displayed, but when you actually workout you don’t know how much time it s left. Other than that, it’s perfect.

### 1/5 — Pointless

*2024-07-07*

Won’t run in the background. Stopped the interval when the phone was locked or I shifted to another app

**Developer response:** I actually put that in by design. Next time I do a software update I can put in a setting to have it run in the background.

### 4/5 — Good app

*2024-06-30*

Provide more color options for the intervals and the ability to type the time rather than scrolling and this app would be great!

### 5/5 — Love it !!

*2021-04-11*

Love this app. Very easy to use and I can hear the beeping in the loud gym. I would be nice if they had an option to share our workouts with other HIIT app owners

**Developer response:** Hi! Thank you so much for the review! You can share workouts from your workout list screen by swiping to the left on a workout, choosing the green Share icon, and then either emailing or AirDroping the workout to friends. If you have any questions or would like a more detailed description with images, please email us at info@hiitbuilderapp.com

### 5/5 — Great app

*2021-02-21*

The app has great functionality and options.

### 5/5 — Flexibility

*2021-02-16*

I love having the ability to customize, not only the type of exercise, but the interval length and the number of repetitions.  This app has become an exercise game changer for me!

### 5/5 — Great for customizing workouts

*2021-02-06*

I love being able to enter the names of my exercises and customizing length of intervals.  Once all my workouts are created and saved, it will be so easy to select which one to do each day, open, and begin. I like the new feature of being able to send my workouts to other app users. The look of the timer is awesome.

## Frequently asked questions about Interval Timer

### Does Interval Timer have ads?

No, Interval Timer is ad-free. The developers prioritize a clean user experience without advertisements interrupting your workouts.

### What is the pricing for Interval Timer?

Interval Timer is free to download and use. It offers a two-day free trial of all features, with optional monthly ($0.49) and yearly ($2.99) subscriptions for continued access.

### Can Interval Timer track my workouts in Apple Health?

Yes, Interval Timer can automatically log your workouts in HealthKit if you enable this feature. This allows you to review your fitness data in the Health or Fitness apps.

### What devices does Interval Timer support?

Interval Timer is available on iPhone, iPad, and Apple Watch. It also supports iPod.

### How often is Interval Timer updated?

The app was last updated on December 31, 2022. New interval workouts are added regularly to the website for users to download.

### Can I customize the sound and visual cues in Interval Timer?

Yes, you can customize how Interval Timer notifies you of interval changes. Options include countdowns, bells, speaking the next exercise name, and screen flashing.

### Is Interval Timer suitable for beginners?

Yes, Interval Timer is designed to be easy to see with large fonts and contrasting colors, making it accessible for users of all fitness levels. You can create custom workouts to suit your needs.

### What is the age rating for Interval Timer?

Interval Timer has an age rating of 4+. This indicates it is suitable for a wide range of users.

## Version history (last 5 releases)

### 3.1.3 — 2022-12-31

* New Features!! Added an Apple Watch app that allows you to run workouts, see your heart rate, and see calories burned during a workout.
* New Features!! Added connections to HealthKit to log your HIIT workouts in HealthKit for review in Apple's Health App and Fitness App.
* Some usability and process improvements

### 2.12.2 — 2022-08-05

Fixed minor defects and process improvements.

### 2.12.1 — 2021-10-16

Fixed minor defects and process improvements.

### 2.11.1 — 2021-05-04

Updated user-interface screen flow. Minor bug fixes and process improvements.

### 2.10.1 — 2021-04-25

User interface improvements. Minor bug fixes. Process improvements.

## Apps similar to Interval Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Exercise Timer: Interval Timer](https://appshunter.io/ios/app/exercise-timer-interval-timer/id1501534442) | 4.8 (929) | Free | Health & Fitness |
| [Interval Timer - Tabata Timer](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568) | 4.5 (18,111) | Free | Health & Fitness |
| [Timer Tabata for Workout, HIIT](https://appshunter.io/ios/app/timer-tabata-for-workout-hiit/id756930454) | 4.7 (492) | Free | Health & Fitness |
| [Tabata Timer: Interval Timer.](https://appshunter.io/ios/app/tabata-timer-interval-timer/id1255964203) | 4.9 (9,048) | Free | Health & Fitness |
| [Interval Timer □ HIIT Timer](https://appshunter.io/ios/app/interval-timer-hiit-timer/id1124297113) | 4.8 (85,231) | Free | Health & Fitness |
| [Intervals Pro: HIIT Timer](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938) | 4.8 (13,460) | Free | Health & Fitness |

## More apps by Curtis Wichern

- [Intervals - HIIT Builder Lite](https://appshunter.io/ios/app/intervals-hiit-builder-lite/id1565592459)
- [Don's Stopwatch](https://appshunter.io/ios/app/dons-stopwatch/id1568759043)
- [SHYH Link](https://appshunter.io/ios/app/shyh-link/id6742087077)

All apps by Curtis Wichern: https://appshunter.io/developer/1545032848

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-21.*