# CatBlock vs GridBlock

The clearest difference is ads: CatBlock at none against GridBlock's shown. CatBlock also leads on iOS requirement (15.0 vs 18.0). GridBlock's advantage is update cadence (every 3 days vs every 3 weeks). On price, 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.

CatBlock ships an update every 3 weeks, GridBlock every 3 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CatBlock | GridBlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 105 MB | 40 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kouryou cho](https://appshunter.io/developer/1893279296) | [Lars Prins](https://appshunter.io/developer/1795427377) |

## What reviewers say

### CatBlock

[App page](https://appshunter.io/ios/app/catblock/id6762186550)

**In-app purchases:** none


### GridBlock

[App page](https://appshunter.io/ios/app/gridblock-puzzle-game/id6766056831)

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

**In-app purchases:** none


## Frequently asked questions

### Is CatBlock free?

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

### Is GridBlock free?

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

### Do CatBlock or GridBlock have ads?

GridBlock shows ads; CatBlock does not.

### Which is updated more often, CatBlock or GridBlock?

CatBlock ships an update every 3 weeks, and GridBlock every 3 days. Most recently, CatBlock was updated on October 14, 2026 and GridBlock on October 7, 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.*