# KNAF vs Studio Gym

The clearest difference is ads: Studio Gym at none against KNAF's shown. KNAF's advantage is iOS requirement (13.4 vs 15.0). On price, update cadence, 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.

KNAF ships an update every 2 months, Studio Gym every 6 weeks. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KNAF | Studio Gym |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 44 MB | 41 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stichting Organisatie Nederlands Autocross Kampioenschap (sonak)](https://appshunter.io/developer/1389062579) | [Studio Gym](https://appshunter.io/developer/1783574396) |

## What reviewers say

### KNAF

[App page](https://appshunter.io/ios/app/knaf/id1389062580)

**Features:** macOS Compatibility

**In-app purchases:** none


### Studio Gym

[App page](https://appshunter.io/ios/app/studio-gym/id6739067743)

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

**In-app purchases:** none


## Frequently asked questions

### Is KNAF free?

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

### Is Studio Gym free?

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

### Do KNAF or Studio Gym have ads?

KNAF shows ads; Studio Gym does not.

### Which is updated more often, KNAF or Studio Gym?

KNAF ships an update every 2 months, and Studio Gym every 6 weeks. Most recently, KNAF was updated on September 27, 2026 and Studio Gym on October 7, 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.*