Comparison

Kurotto Extreme vs Ball Sorting In Tubes

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Kurotto Extreme

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
Read full description

This game originated in Japan. The rules are really simple so you could enjoy hours of challenges, from easy to complex difficulty. Fill in some of the empty cells with the following rules: 1. The number in a circle indicates the total number of continuous black cells extending from it, vertically and horizontally. 2. Dragon circles may have any number of black cells around them. 3. Cells with circles cannot be colored. This game includes: + 350 challenges across 7 levels of difficulty. + 7 new daily challenges (1 per level of difficulty) + Autosave of your progress solving a grid so you could pause and resume as you wish. + No time limits to complete a challenge + 2 global leaderboards + Full Tutorial + and many more capabilities

About

Ball Sorting In Tubes

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
Read full description

This is an exciting puzzle game that will make your gears grind. You are able to customize your game with different backgrounds that improve your experience. And don't worry if you get stuck on a single level because you are allowed to skip ahead to any level on the page that you are on, but you cannot move onto the next page without completing your current one. And when you think that it could be impossible, try out easy mode to help you along to completing your level! How To Play: -Tap a single tube to move the ball at the top above the tube, then choose another tube to move that ball and balls with the same color along with it. -You are only allowed to move a ball into a tube if the balls at the top are the same color or if the other tube is empty. -Balls of the same color in the tube that you are trying to move will move with the top ball so make sure there is enough space for all of them! Features: -An undo and a tiny tube that you can buy with coins to make the level easier -Several backgrounds that you can purchase with coins from winning levels -Several ball variants that you can choose from to make your experience better

Screenshots

Kurotto Extreme4 screens
Ball Sorting In Tubes4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Kurotto Extreme versus Ball Sorting In Tubes: the parameters behind the verdict, then further details
ParameterKurotto ExtremeBall Sorting In Tubes
PriceFreeFree
Rating5.0 (1 ratings)5.0 (7 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings17 — better
Update frequencyEvery 22 monthsEvery 2 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size22 MB128 MB
Age rating4+9+
DeveloperChristophe BarangerNutron Labs

Customer experience

Kurotto Extreme

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Ball Sorting In Tubes

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kurotto Extreme

No in-app purchases

2 purchases

Ball Sorting In Tubes

One-time2
  • Cat Background$1.99
  • Remove Ads$2.99

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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