# Happy Blocks 3D vs CatStack!

The clearest difference is iOS requirement: Happy Blocks 3D at 13.0 against CatStack!'s 18.5. 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 | Happy Blocks 3D | CatStack! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 151 MB | 42 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Furkan Ozay](https://appshunter.io/developer/1805215219) | [TAKURO INOUE](https://appshunter.io/developer/1806841917) |

## What reviewers say

### Happy Blocks 3D

[App page](https://appshunter.io/ios/app/happy-blocks-3d/id6743943678)

**Features:** macOS Compatibility

**In-app purchases:** none


### CatStack!

[App page](https://appshunter.io/ios/app/catstack/id6747741193)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Happy Blocks 3D free?

Happy Blocks 3D is free to download, with no in-app purchases.

### Is CatStack! free?

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

### Do Happy Blocks 3D or CatStack! have ads?

Neither Happy Blocks 3D nor CatStack! 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.*