# Kurotto Extreme vs THE BLOCK PUZZLE

The clearest difference is update cadence: THE BLOCK PUZZLE at weekly against Kurotto Extreme's every 22 months. Kurotto Extreme's advantage is iOS requirement (13.0 vs 16.4). 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.

Kurotto Extreme ships an update every 22 months, THE BLOCK PUZZLE weekly. The most recent releases landed on October 5, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Kurotto Extreme | THE BLOCK PUZZLE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kurotto-extreme/id1499171663/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 22 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 22 MB | 47 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christophe Baranger](https://appshunter.io/developer/982794089) | [gravass, Inc.](https://appshunter.io/developer/1527714391) |

## What reviewers say

### Kurotto Extreme

[App page](https://appshunter.io/ios/app/kurotto-extreme/id1499171663)

A logic puzzle game originating from Japan with simple rules for hours of engaging challenges. Fill empty cells based on numbered circles indicating continuous black cells, with no time limits and autosave functionality.

**Highlights:** 350+ challenges across 7 difficulty levels, 7 new daily challenges, Autosave progress, No time limits, 2 global leaderboards, Full tutorial

**In-app purchases:** none


### THE BLOCK PUZZLE

[App page](https://appshunter.io/ios/app/the-block-puzzle-polyomino/id6445902263)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kurotto Extreme free?

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

### Is THE BLOCK PUZZLE free?

THE BLOCK PUZZLE is free to download, with no in-app purchases.

### Do Kurotto Extreme or THE BLOCK PUZZLE have ads?

Both Kurotto Extreme and THE BLOCK PUZZLE show ads.

### Which is updated more often, Kurotto Extreme or THE BLOCK PUZZLE?

Kurotto Extreme ships an update every 22 months, and THE BLOCK PUZZLE weekly. Most recently, Kurotto Extreme was updated on October 5, 2026 and THE BLOCK PUZZLE on October 27, 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.*