# CoChecker vs MK Button

The clearest difference is update cadence: CoChecker at every 3 weeks against MK Button's every 11 months. 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.

CoChecker ships an update every 3 weeks, MK Button every 11 months. The most recent releases landed on August 8, 2026 and March 11, 2026 respectively.

## The numbers

| Metric | CoChecker | MK Button |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/cochecker/id1048961367/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Monetization | Free | — |
| Size | 4 MB | 18 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kane Asia Inc.](https://appshunter.io/developer/1542732944) | [Moko Technology Ltd](https://appshunter.io/developer/1242868347) |

## What reviewers say

### CoChecker

[App page](https://appshunter.io/ios/app/cochecker/id1048961367)

This utility app transmits data through your device's audio jack. It is currently compatible with select high-end devices.

**Highlights:** Data transmission via audio jack, Compatible with select devices, Utility function

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

**In-app purchases:** none


### MK Button

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CoChecker free?

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

### Is MK Button free?

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

### Do CoChecker or MK Button have ads?

Neither CoChecker nor MK Button shows ads.

### Which is updated more often, CoChecker or MK Button?

CoChecker ships an update every 3 weeks, and MK Button every 11 months. Most recently, CoChecker was updated on August 8, 2026 and MK Button on March 11, 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.*