# M2M Data Controller vs Holtek MCU Selector

The clearest difference is iOS requirement: M2M Data Controller at 11.0 against Holtek MCU Selector's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

M2M Data Controller ships an update every 3 months, Holtek MCU Selector every 2 months. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | M2M Data Controller | Holtek MCU Selector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 71 MB | 19 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [M2M DATA GROUP LIMITED](https://appshunter.io/developer/1425847555) | [Holtek Semiconductor(China) Inc](https://appshunter.io/developer/1052056181) |

## What reviewers say

### M2M Data Controller

[App page](https://appshunter.io/ios/app/m2m-data-controller/id1590594616)

**Features:** macOS Compatibility

**In-app purchases:** none


### Holtek MCU Selector

[App page](https://appshunter.io/ios/app/holtek-mcu-selector/id6444018542)

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

**In-app purchases:** none


## Frequently asked questions

### Is M2M Data Controller free?

M2M Data Controller is free to download, with no in-app purchases.

### Is Holtek MCU Selector free?

Holtek MCU Selector is free to download, with no in-app purchases.

### Do M2M Data Controller or Holtek MCU Selector have ads?

Neither M2M Data Controller nor Holtek MCU Selector shows ads.

### Which is updated more often, M2M Data Controller or Holtek MCU Selector?

M2M Data Controller ships an update every 3 months, and Holtek MCU Selector every 2 months. Most recently, M2M Data Controller was updated on October 4, 2026 and Holtek MCU Selector on October 10, 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.*