# MK Button vs Unit Converter

The clearest difference is in-app purchases: MK Button at none against Unit Converter's 2. MK Button also leads on iOS requirement (12.0 vs 15.0). Unit Converter's advantage is update cadence (every 2 weeks vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Unit Converter sells 2 in-app purchases, starting at $2.49 per month. MK Button asks for nothing beyond the download.

MK Button ships an update every 11 months, Unit Converter every 2 weeks. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MK Button | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Size | 18 MB | 49 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Moko Technology Ltd](https://appshunter.io/developer/1242868347) | [Petrichka Yaroslav](https://appshunter.io/developer/1032980882) |

## What reviewers say

### MK Button

[App page](https://appshunter.io/ios/app/mk-button/id1630904337)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-univerter/id6738687525)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.49 | per month |
| Yearly Premium | $14.99 | per year |


## Frequently asked questions

### Is MK Button free?

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

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Do MK Button or Unit Converter have ads?

Neither MK Button nor Unit Converter shows ads.

### Which is updated more often, MK Button or Unit Converter?

MK Button ships an update every 11 months, and Unit Converter every 2 weeks. Most recently, MK Button was updated on October 5, 2026 and Unit Converter 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.*