# klang² vs Play4

The clearest difference is in-app purchases: Play4 at none against klang²'s 10. Play4 also leads on iOS requirement (11.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. klang² sells 10 one-off in-app purchases. Play4 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | klang² | Play4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/play4/id1592317124/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 89 MB | 99 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) | [SCS Centro Zaffiria](https://appshunter.io/developer/954603750) |

## 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 |


### Play4

[App page](https://appshunter.io/ios/app/play4/id1592317124)

Engage with interactive stories to combat sexist hate speech rooted in stereotypes and gender discrimination. Choose to play as Mary, Zack, or Betty and explore their unique narratives.

**Highlights:** Interactive storytelling, Multiple character perspectives, Combats sexist hate speech, Educational content, Stereotype and discrimination themes

**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 Play4 free?

Play4 is free to download, with no in-app purchases.

### Do klang² or Play4 have ads?

Neither klang² nor Play4 shows ads.

### Which is updated more often, klang² or Play4?

klang² ships an update every 2 months, and Play4 every 2 months. Most recently, klang² was updated on October 2, 2026 and Play4 on October 4, 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.*