# intervals vs HIIT (US)

The clearest difference is review sentiment: intervals at 100% against HIIT (US)'s 50%. intervals also leads on in-app purchases (none vs 3) and ads (none vs shown). HIIT (US)'s advantage is rating (5.0 vs 4.2) and device support (4 vs 2). On price and ratings volume there is nothing between them.

Both are free to download. HIIT (US) sells 3 in-app purchases, starting at $1.99 per month. intervals asks for nothing beyond the download.

HIIT (US) holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 10 and 4 respectively. Written reviews complicate that: 100% of intervals's written reviews are positive against 50% of HIIT (US)'s, so the app with the better star average is not the one people write more warmly about.

intervals ships an update every 5 weeks, HIIT (US) every 4 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | intervals | HIIT (US) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (10 ratings)](https://appshunter.io/ios/app/intervals-crossfit-timer/id1216423303/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hiit-us/id1485158100/reviews)** |
| Number of ratings | **10** | 4 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 22 MB | 34 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Lilian SUZAN](https://appshunter.io/developer/808810933) | [Valentin Cattoen](https://appshunter.io/developer/1485158099) |

## What reviewers say

### intervals

[App page](https://appshunter.io/ios/app/intervals-crossfit-timer/id1216423303)

This app helps you structure and time your workouts, including intervals for rest and effort. It's designed for various training methods like CrossFit, Tabata, and HIIT, allowing you to create and save custom timers for your fitness sessions.

**Highlights:** Create custom workout timers, Personalize intervals with time and color, Set round counts, Save and name workout routines, Supports CrossFit, Tabata, and HIIT

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HIIT (US)

[App page](https://appshunter.io/ios/app/hiit-us/id1485158100)

Design custom workout timers with adjustable exercise durations, repetition counts, and time caps. Track progress, export results, and enjoy audio feedback and music integration. Supports various workout styles like AMRAP and Tabata.

**Highlights:** Customizable exercise timers, Repetition-based intervals, Time cap setting, Workout analysis and PDF export, Audio and sound feedback, Music playlist integration, QR code sharing/import

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HIIT Premium - 1 Month | $1.99 | per month |
| HIIT Premium - 6 Months | $7.99 | per 6 months |
| HIIT Premium - 12 Months | $10.99 | per year |


## Frequently asked questions

### Is intervals free?

intervals is free to download, with no in-app purchases.

### Is HIIT (US) free?

HIIT (US) is free to download, with in-app purchases available.

### Which has better reviews, intervals or HIIT (US)?

HIIT (US) is rated higher. intervals averages 4.2 out of 5 from 10 ratings, while HIIT (US) averages 5.0 from 4 ratings.

### Do intervals or HIIT (US) have ads?

HIIT (US) shows ads; intervals does not.

### Which is updated more often, intervals or HIIT (US)?

intervals ships an update every 5 weeks, and HIIT (US) every 4 months. Most recently, intervals was updated on October 24, 2026 and HIIT (US) on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*