# HIIT 974 vs HIIT Timer

The clearest difference is in-app purchases: HIIT 974 at none against HIIT Timer's 1. HIIT 974 also leads on update cadence (every 3 days vs every 4 weeks). HIIT Timer's advantage is iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. HIIT Timer sells 1 one-off in-app purchase. HIIT 974 asks for nothing beyond the download.

HIIT 974 ships an update every 3 days, HIIT Timer every 4 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HIIT 974 | HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 weeks |
| Size | 1 MB | 2 MB |
| Requires iOS | 26.4 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Johan Chapelain](https://appshunter.io/developer/6779238523) | [Hyunwoo Lee](https://appshunter.io/developer/1883358620) |

## What reviewers say

### HIIT 974

[App page](https://appshunter.io/ios/app/hiit-974/id6779238521)

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

**In-app purchases:** none


### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-intervalflow/id6788945849)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IntervalFlow Pro | $9.99 | one-time |


## Frequently asked questions

### Is HIIT 974 free?

HIIT 974 is free to download, with no in-app purchases.

### Is HIIT Timer free?

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

### Do HIIT 974 or HIIT Timer have ads?

Neither HIIT 974 nor HIIT Timer shows ads.

### Which is updated more often, HIIT 974 or HIIT Timer?

HIIT 974 ships an update every 3 days, and HIIT Timer every 4 weeks. Most recently, HIIT 974 was updated on October 31, 2026 and HIIT Timer on November 5, 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.*