# Kulla vs klang²

The clearest difference is price: klang² at Free against Kulla's $1.99. Kulla's advantage is in-app purchases (none vs 10) and iOS requirement (12.0 vs 15.6). On update cadence, ads and device support there is nothing between them.

klang² is free to download; Kulla costs $1.99 up front. klang² sells 10 one-off in-app purchases. Kulla asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Kulla | klang² |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/kulla-di-bulla/id892032120/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 71.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | — |
| Size | 139 MB | 89 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Arnhold](https://appshunter.io/developer/432185706) | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) |

## What reviewers say

### Kulla

[App page](https://appshunter.io/ios/app/kulla-di-bulla/id892032120)

This game challenges players to guide a marble through physics-based levels by remembering colors and controlling the ball. It offers a variety of difficulty levels, from easy to challenging, requiring dexterity, patience, and puzzle-solving skills.

**Highlights:** 150 levels with increasing difficulty, Physics-based ball control, Color memory challenges, Level preview and rating system, Integrated iTunes player, Universal app for iPhone and iPad, Gyro/tilt control option

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Kulla free?

Kulla costs $1.99, with no in-app purchases.

### Is klang² free?

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

### Do Kulla or klang² have ads?

Neither Kulla nor klang² shows ads.

### Which is updated more often, Kulla or klang²?

Kulla ships an update every 2 months, and klang² every 2 months. Most recently, Kulla was updated on November 1, 2026 and klang² on November 11, 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.*