# Diabelli's Theme vs Kurotto Extreme

Diabelli's Theme and Kurotto Extreme both sit at 5.0 stars, but that hides the real split: 100% of Kurotto Extreme's written reviews are positive against 50% of Diabelli's Theme's. Kurotto Extreme also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 26.0). Diabelli's Theme's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Diabelli's Theme sells 1 one-off in-app purchase. Kurotto Extreme asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Diabelli's Theme against 5.0 for Kurotto Extreme. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 50% of Diabelli's Theme's written reviews are positive against 100% of Kurotto Extreme's.

Diabelli's Theme ships an update every 12 months, Kurotto Extreme every 22 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Diabelli's Theme | Kurotto Extreme |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/diabellis-theme/id634208794/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/kurotto-extreme/id1499171663/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 12 months** | Every 22 months |
| Monetization | **Free** | Ad-supported |
| Size | 47 MB | 22 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matt Neuburg](https://appshunter.io/developer/346204863) | [Christophe Baranger](https://appshunter.io/developer/982794089) |

## What reviewers say

### Diabelli's Theme

[App page](https://appshunter.io/ios/app/diabellis-theme/id634208794)

This game challenges you to reassemble a shuffled photograph by listening to its corresponding musical theme. Each photo piece is linked to a music segment, providing auditory clues to guide your puzzle-solving.

**Highlights:** 24-piece photo puzzles, Audio-visual synchronization, Musical theme hints, Interactive piece tapping, Unique puzzle mechanics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Choose Your Own Photo | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Diabelli's Theme free?

Diabelli's Theme is free to download, with in-app purchases available.

### Is Kurotto Extreme free?

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

### Which has better reviews, Diabelli's Theme or Kurotto Extreme?

Diabelli's Theme and Kurotto Extreme are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Diabelli's Theme or Kurotto Extreme have ads?

Kurotto Extreme shows ads; Diabelli's Theme does not.

### Which is updated more often, Diabelli's Theme or Kurotto Extreme?

Diabelli's Theme ships an update every 12 months, and Kurotto Extreme every 22 months. Most recently, Diabelli's Theme was updated on November 1, 2026 and Kurotto Extreme 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.*