# Interval Flow vs Running Interval Timer & HIIT

The clearest difference is in-app purchases: Running Interval Timer & HIIT at none against Interval Flow's 1. Interval Flow's advantage is iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Interval Flow | Running Interval Timer & HIIT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 8 MB | 3 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tegyaan](https://appshunter.io/developer/1711584632) | [Fenuku Kekeli](https://appshunter.io/developer/1822419894) |

## What reviewers say

### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow/id6469113776)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multiple Programs | $3.99 | one-time |


### Running Interval Timer & HIIT

[App page](https://appshunter.io/ios/app/running-interval-timer-and-hiit/id6760904049)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Flow free?

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

### Is Running Interval Timer & HIIT free?

Running Interval Timer & HIIT is free to download, with no in-app purchases.

### Do Interval Flow or Running Interval Timer & HIIT have ads?

Neither Interval Flow nor Running Interval Timer & HIIT shows ads.

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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.*