# WTFat vs MutLab

The clearest difference is price: MutLab at Free against WTFat's $1.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

MutLab is free to download; WTFat costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WTFat ships an update every 4 months, MutLab every 2 months. The most recent releases landed on May 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | WTFat | MutLab |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 5 MB | 60 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yukihiro fujita](https://appshunter.io/developer/537078708) | [Mutlab](https://appshunter.io/developer/1363984051) |

## What reviewers say

### WTFat

[App page](https://appshunter.io/ios/app/wtfat-with-physics-engine/id596216671)

**Features:** macOS Compatibility

**In-app purchases:** none


### MutLab

[App page](https://appshunter.io/ios/app/mutlab/id1576343740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WTFat free?

WTFat costs $1.99, with no in-app purchases.

### Is MutLab free?

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

### Do WTFat or MutLab have ads?

Neither WTFat nor MutLab shows ads.

### Which is updated more often, WTFat or MutLab?

WTFat ships an update every 4 months, and MutLab every 2 months. Most recently, WTFat was updated on May 16, 2026 and MutLab on September 21, 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.*