# Kitty Brain Blocks vs Stacking Bird

Kitty Brain Blocks and Stacking Bird are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Kitty Brain Blocks | Stacking Bird |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 132 MB | 319 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dao Quang Kinh](https://appshunter.io/developer/1896775363) | [Ngo Thi Thom](https://appshunter.io/developer/1733953486) |

## What reviewers say

### Kitty Brain Blocks

[App page](https://appshunter.io/ios/app/kitty-brain-blocks/id6792197653)

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

**In-app purchases:** none


### Stacking Bird

[App page](https://appshunter.io/ios/app/stacking-bird-tower-quest/id6797460008)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kitty Brain Blocks free?

Kitty Brain Blocks is free to download, with no in-app purchases.

### Is Stacking Bird free?

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

### Do Kitty Brain Blocks or Stacking Bird have ads?

Neither Kitty Brain Blocks nor Stacking Bird 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.*