# Klangtester vs WILSEN

The clearest difference is in-app purchases: WILSEN at none against Klangtester's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Klangtester sells 4 one-off in-app purchases. WILSEN asks for nothing beyond the download.

Klangtester ships an update every 7 months, WILSEN every 4 months. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Klangtester | WILSEN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Size | 24 MB | 7 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Klangspektrum GmbH - Institut fur naturliches HorErleben](https://appshunter.io/developer/1478150383) | [Pepperl+Fuchs SE](https://appshunter.io/developer/553838697) |

## What reviewers say

### Klangtester

[App page](https://appshunter.io/ios/app/klangtester/id1478150384)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Tickets | $2.99 | one-time |
| 100 Tickets | $19.99 | one-time |
| 500 Tickets | $74.99 | one-time |
| 1000 Tickets | $99.99 | one-time |


### WILSEN

[App page](https://appshunter.io/ios/app/wilsen/id1526832085)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Klangtester free?

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

### Is WILSEN free?

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

### Do Klangtester or WILSEN have ads?

Neither Klangtester nor WILSEN shows ads.

### Which is updated more often, Klangtester or WILSEN?

Klangtester ships an update every 7 months, and WILSEN every 4 months. Most recently, Klangtester was updated on October 9, 2026 and WILSEN on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*