# klang² vs Wer war Wilhelm?

The clearest difference is in-app purchases: Wer war Wilhelm? at none against klang²'s 10. Wer war Wilhelm? also leads on update cadence (daily vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

klang² ships an update every 2 months, Wer war Wilhelm? daily. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | klang² | Wer war Wilhelm? |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Size | 89 MB | 403 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) | [Paintbucket Games UG (haftungsbeschraenkt)](https://appshunter.io/developer/1574501368) |

## 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 |


### Wer war Wilhelm?

[App page](https://appshunter.io/ios/app/wer-war-wilhelm/id1630779971)

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

**In-app purchases:** none


## Frequently asked questions

### Is klang² free?

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

### Is Wer war Wilhelm? free?

Wer war Wilhelm? is free to download, with no in-app purchases.

### Do klang² or Wer war Wilhelm? have ads?

Neither klang² nor Wer war Wilhelm? shows ads.

### Which is updated more often, klang² or Wer war Wilhelm??

klang² ships an update every 2 months, and Wer war Wilhelm? daily. Most recently, klang² was updated on October 2, 2026 and Wer war Wilhelm? on October 8, 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.*