# KMN666 vs MRK

The clearest difference is iOS requirement: KMN666 at 8.1 against MRK's 12.2. 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.

## The numbers

| Metric | KMN666 | MRK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 7 months |
| Size | 21 MB | 14 MB |
| Requires iOS | **8.1** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [维柱 邓](https://appshunter.io/developer/442896877) | [维柱 邓](https://appshunter.io/developer/1019425413) |

## What reviewers say

### KMN666

[App page](https://appshunter.io/ios/app/kmn666/id1196173939)

**Features:** macOS Compatibility

**In-app purchases:** none


### MRK

[App page](https://appshunter.io/ios/app/mrk/id1492437490)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KMN666 free?

KMN666 is free to download, with no in-app purchases.

### Is MRK free?

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

### Do KMN666 or MRK have ads?

Neither KMN666 nor MRK 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.*