# Kurotto Extreme vs Tough 10

The clearest difference is update cadence: Tough 10 at daily against Kurotto Extreme's every 22 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.

Kurotto Extreme ships an update every 22 months, Tough 10 daily. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Kurotto Extreme | Tough 10 |
| --- | --- | --- |
| 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 | **Daily** |
| Monetization | Ad-supported | — |
| Size | 22 MB | 16 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christophe Baranger](https://appshunter.io/developer/982794089) | [Mustafa Kandemir](https://appshunter.io/developer/1669600374) |

## 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


### Tough 10

[App page](https://appshunter.io/ios/app/tough-10/id6446257490)

**Features:** macOS Compatibility, 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 Tough 10 free?

Tough 10 is free to download, with no in-app purchases.

### Do Kurotto Extreme or Tough 10 have ads?

Both Kurotto Extreme and Tough 10 show ads.

### Which is updated more often, Kurotto Extreme or Tough 10?

Kurotto Extreme ships an update every 22 months, and Tough 10 daily. Most recently, Kurotto Extreme was updated on October 5, 2026 and Tough 10 on October 18, 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.*