# Kurotto Extreme vs Ball Sorting In Tubes

The clearest difference is in-app purchases: Kurotto Extreme at none against Ball Sorting In Tubes's 2. Ball Sorting In Tubes's advantage is update cadence (every 2 weeks vs every 22 months) and ratings volume (7 vs 1). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Ball Sorting In Tubes sells 2 one-off in-app purchases. Kurotto Extreme asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Kurotto Extreme against 5.0 for Ball Sorting In Tubes. That said, the two scores are not equally well evidenced: Ball Sorting In Tubes has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Kurotto Extreme ships an update every 22 months, Ball Sorting In Tubes every 2 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Kurotto Extreme | Ball Sorting In Tubes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/kurotto-extreme/id1499171663/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/ball-sorting-in-tubes/id6447139347/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 22 months | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 22 MB | 128 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Christophe Baranger](https://appshunter.io/developer/982794089) | [Nutron Labs](https://appshunter.io/developer/1749195765) |

## 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


### Ball Sorting In Tubes

[App page](https://appshunter.io/ios/app/ball-sorting-in-tubes/id6447139347)

Engage your mind with this colorful puzzle game. Sort balls of the same color into their respective tubes by tapping and moving them. Offers customizable backgrounds and difficulty options to enhance your gameplay experience.

**Highlights:** Color ball sorting gameplay, Customizable backgrounds, Level skipping option, Easy mode for assistance, Undo and helper tube in-app purchases, Collectible ball variants

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cat Background | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Kurotto Extreme free?

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

### Is Ball Sorting In Tubes free?

Ball Sorting In Tubes is free to download, with in-app purchases available.

### Which has better reviews, Kurotto Extreme or Ball Sorting In Tubes?

Kurotto Extreme and Ball Sorting In Tubes are both rated 5.0 out of 5 on the App Store, from 1 and 7 ratings respectively.

### Do Kurotto Extreme or Ball Sorting In Tubes have ads?

Both Kurotto Extreme and Ball Sorting In Tubes show ads.

### Which is updated more often, Kurotto Extreme or Ball Sorting In Tubes?

Kurotto Extreme ships an update every 22 months, and Ball Sorting In Tubes every 2 weeks. Most recently, Kurotto Extreme was updated on November 11, 2026 and Ball Sorting In Tubes on November 3, 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.*