# Roughness vs AR Fourier Optics Lab

Roughness and AR Fourier Optics Lab are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Roughness | AR Fourier Optics Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | — |
| Size | 26 MB | 238 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [KIDS interactive GmbH](https://appshunter.io/developer/731500021) |

## What reviewers say

### Roughness

[App page](https://appshunter.io/ios/app/roughness/id1356085703)

**In-app purchases:** none


### AR Fourier Optics Lab

[App page](https://appshunter.io/ios/app/ar-fourier-optics-lab/id6473918062)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Roughness free?

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

### Is AR Fourier Optics Lab free?

AR Fourier Optics Lab is free to download, with no in-app purchases.

### Do Roughness or AR Fourier Optics Lab have ads?

Neither Roughness nor AR Fourier Optics Lab 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.*