# klang²

> klang² (iPhone/iPad app by Oberlin & Rennertz GmbH.)

- Source: https://appshunter.io/ios/app/klang/id1491987376 (this page in markdown: same URL + `.md`)
- Developer: [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830)
- Category: Games, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 89 MB
- Languages: American English
- Released: 2019-12-19
- Data updated: 2026-05-18
- User reviews in markdown: https://appshunter.io/ios/app/klang/id1491987376/reviews.md

## What is klang²?

20 sound squares turn your ears upside down. Which bird sings? Which composer sounds? Can you put proverbs together and recognize foreign languages? Place your smartphone with the klang² app open in the middle of the table, place a sound square on the reader and listen carefully: Off you go with your acoustic game collection!

ATTENTION: This app only works together with 20 sound squares, which are available via klang2.com.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 5 releases)

### 4.1.0 — 2026-01-21

Improved accessibility: the startscreen should work a lot better with voiceover now. Since we have only little expertise in this area feedback is welcome: write us to support@klang2.com

### 4.0.6 — 2024-05-14

The instructions are easier to access at the first start of the app

### 4.0.4 — 2024-03-04

In QR-Mode the camera can now be switched. The instructions for the QR-Mode were completed

### 4.0.3 — 2023-12-19

We have improved some features and fixed a few bugs. Have fun with klang²!

### 4.0.2 — 2023-10-26

We will soon release a new generation of sound squares and have already prepared our app for it

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## Related topics

[klang2](https://appshunter.io/ios/topics/klang2) · [klang](https://appshunter.io/ios/topics/klang)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-18.*