# HIIT 974 vs IntervalFlow

The clearest difference is update cadence: HIIT 974 at every 3 days against IntervalFlow's every 3 weeks. IntervalFlow's advantage is iOS requirement (17.0 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HIIT 974 ships an update every 3 days, IntervalFlow every 3 weeks. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | HIIT 974 | IntervalFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 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


### IntervalFlow

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

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

**In-app purchases:** none


## Frequently asked questions

### Is HIIT 974 free?

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

### Is IntervalFlow free?

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

### Do HIIT 974 or IntervalFlow have ads?

Neither HIIT 974 nor IntervalFlow shows ads.

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

HIIT 974 ships an update every 3 days, and IntervalFlow every 3 weeks. Most recently, HIIT 974 was updated on October 15, 2026 and IntervalFlow on October 6, 2026.

---

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