# RT Fit vs HIIT3C

The clearest difference is update cadence: HIIT3C at every 6 months against RT Fit's every 15 months. 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.

RT Fit ships an update every 15 months, HIIT3C every 6 months. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RT Fit | HIIT3C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 months** |
| Size | 67 MB | 56 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ashbourne](https://appshunter.io/developer/1130933933) | [TeamUp Sports](https://appshunter.io/developer/1449504626) |

## What reviewers say

### RT Fit

[App page](https://appshunter.io/ios/app/rt-fit/id6474896511)

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

**In-app purchases:** none


### HIIT3C

[App page](https://appshunter.io/ios/app/hiit3c/id6745253915)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RT Fit free?

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

### Is HIIT3C free?

HIIT3C is free to download, with no in-app purchases.

### Do RT Fit or HIIT3C have ads?

Neither RT Fit nor HIIT3C shows ads.

### Which is updated more often, RT Fit or HIIT3C?

RT Fit ships an update every 15 months, and HIIT3C every 6 months. Most recently, RT Fit was updated on October 2, 2026 and HIIT3C on October 9, 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.*