# klang² vs Irodoku

The clearest difference is in-app purchases: Irodoku at none against klang²'s 10. klang²'s advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.5). On price and ads there is nothing between them.

Both are free to download. klang² sells 10 one-off in-app purchases. Irodoku asks for nothing beyond the download.

## The numbers

| Metric | klang² | Irodoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/irodoku/id6705137611/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | — | Free |
| Size | 89 MB | 0 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) | [SOLUNA INTERACTIVE LLC](https://appshunter.io/developer/1769057564) |

## What reviewers say

### klang²

[App page](https://appshunter.io/ios/app/klang/id1491987376)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Klang2 Pro Option 0 | Free | one-time |
| Klang2 Pro Option 1 | $0.99 | one-time |
| Bundesländer und Hauptstädte | $0.99 | one-time |
| Klang2 Pro Option 2 | $1.99 | one-time |
| Klang2 Pro Option 3 | $3.99 | one-time |
| Volkslieder Premium | $3.99 | one-time |
| Tierisch Menschlich | $3.99 | one-time |
| Klang2 Pro Option 4 | $7.99 | one-time |
| Klang2 Pro Option 5 | $11.99 | one-time |
| Klang2 Pro Option 6 | $16.99 | one-time |


### Irodoku

[App page](https://appshunter.io/ios/app/irodoku/id6705137611)

Experience Sudoku with a vibrant twist! This game offers a classic 9x9 grid filled with colors instead of numbers. Challenge yourself with multiple difficulty levels and enjoy smooth animations and intuitive controls.

**Highlights:** 9x9 Colorful Grids, Multiple Difficulty Levels, Smooth Animations, Undo & Delete Functionality, Color Picker, Non-erasable Prefilled Squares

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is klang² free?

klang² is free to download, with in-app purchases available.

### Is Irodoku free?

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

### Do klang² or Irodoku have ads?

Neither klang² nor Irodoku shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*