# M vs Universal Child Development

The clearest difference is update cadence: Universal Child Development at every 2 weeks against M's every 4 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.

M ships an update every 4 months, Universal Child Development every 2 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | M | Universal Child Development |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 24 MB | 30 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Stankovic](https://appshunter.io/developer/1646945487) | [Zivko Najdanovic](https://appshunter.io/developer/1891406773) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-indeks/id6443540018)

**Features:** macOS Compatibility

**In-app purchases:** none


### Universal Child Development

[App page](https://appshunter.io/ios/app/universal-child-development/id6761775038)

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

**In-app purchases:** none


## Frequently asked questions

### Is M free?

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

### Is Universal Child Development free?

Universal Child Development is free to download, with no in-app purchases.

### Do M or Universal Child Development have ads?

Neither M nor Universal Child Development shows ads.

### Which is updated more often, M or Universal Child Development?

M ships an update every 4 months, and Universal Child Development every 2 weeks. Most recently, M was updated on October 3, 2026 and Universal Child Development 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.*