# Interval Clock vs HIIT Interval Timer

The clearest difference is rating: HIIT Interval Timer at 4.2 against Interval Clock's 3.3. HIIT Interval Timer also leads on review sentiment (53% vs 25%) and ratings volume (102 vs 4). Interval Clock's advantage is in-app purchases (none vs 1) and iOS requirement (5.1.1 vs 15.6). On price there is nothing between them.

Both are free to download. HIIT Interval Timer sells 1 one-off in-app purchase. Interval Clock asks for nothing beyond the download.

HIIT Interval Timer holds the better App Store score, 4.2 against 3.3. That said, the two scores are not equally well evidenced: HIIT Interval Timer has 102 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Interval Clock's written reviews are positive against 53% of HIIT Interval Timer's.

## The numbers

| Metric | Interval Clock | HIIT Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/interval-clock/id961918081/reviews) | **[4.2 (102 ratings)](https://appshunter.io/ios/app/hiit-interval-timer/id980471893/reviews)** |
| Number of ratings | 4 | **102** |
| Positive reviews | 25.0% of reviews | **52.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 10 MB |
| Requires iOS | **5.1.1** | 15.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Dachis](https://appshunter.io/developer/623445098) | [Thang Nguyen](https://appshunter.io/developer/921360262) |

## What reviewers say

### Interval Clock

[App page](https://appshunter.io/ios/app/interval-clock/id961918081)

This app provides a customizable countdown timer for interval training. It alerts users to speed up or slow down, making it suitable for various exercise equipment or audio-only workouts. Users can set their own interval lengths and timers, with the app remembering the last configuration.

**Highlights:** Customizable interval lengths, Countdown timer with alerts, Supports audio-only workouts, Remembers last interval settings, Ideal for stationary bikes and treadmills

**In-app purchases:** none


### HIIT Interval Timer

[App page](https://appshunter.io/ios/app/hiit-interval-timer/id980471893)

This app provides a flexible interval timer for high-intensity training. Customize workout cycles, rest periods, and receive color, voice, and sound navigation cues. It runs in the background and offers a built-in music player.

**Highlights:** Customizable interval and rest times, Background and screen-locked operation, Color, voice, and sound navigation, Built-in music player, Create and manage custom timers, Multiple themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $4.99 | one-time |


## Frequently asked questions

### Is Interval Clock free?

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

### Is HIIT Interval Timer free?

HIIT Interval Timer is free to download, with in-app purchases available.

### Which has better reviews, Interval Clock or HIIT Interval Timer?

HIIT Interval Timer is rated higher. Interval Clock averages 3.3 out of 5 from 4 ratings, while HIIT Interval Timer averages 4.2 from 102 ratings.

---

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