# Wissenstraining. Das Quiz. vs klang²

The clearest difference is update cadence: klang² at every 2 months against Wissenstraining. Das Quiz.'s every 9 months. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Wissenstraining. Das Quiz. ships an update every 9 months, klang² every 2 months. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Wissenstraining. Das Quiz. | klang² |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (13K ratings)](https://appshunter.io/ios/app/wissenstraining-das-quiz/id553512165/reviews)** | — |
| Number of ratings | **13K** | — |
| Positive reviews | 95.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Freemium | — |
| Size | 217 MB | 89 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [the binary family](https://appshunter.io/developer/307768703) | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) |

## What reviewers say

### Wissenstraining. Das Quiz.

[App page](https://appshunter.io/ios/app/wissenstraining-das-quiz/id553512165)

Test your general knowledge with a challenging quiz app. It features thousands of questions across various categories, with difficulty that adapts to your performance. Track your progress and improve your knowledge with personalized training.

**Highlights:** Adaptive difficulty based on performance, Thousands of unique questions, Explanations for correct answers, Multiple difficulty levels and categories, Progress saving for multiple players, Region-specific questions

**Features:** macOS Compatibility

**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 Wissenstraining. Das Quiz. free?

Wissenstraining. Das Quiz. is free to download, with in-app purchases available.

### Is klang² free?

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

### Which is updated more often, Wissenstraining. Das Quiz. or klang²?

Wissenstraining. Das Quiz. ships an update every 9 months, and klang² every 2 months. Most recently, Wissenstraining. Das Quiz. was updated on November 5, 2026 and klang² 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.*