# Keyzers App vs Mein OSL

The clearest difference is update cadence: Mein OSL at every 5 months against Keyzers App's every 15 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Keyzers App ships an update every 15 months, Mein OSL every 5 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | Keyzers App | Mein OSL |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 months** |
| Size | 71 MB | 67 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Theo Keijzers](https://appshunter.io/developer/1435813932) | [Landkreis Oberspreewald-Lausitz](https://appshunter.io/developer/1832427249) |

## What reviewers say

### Keyzers App

[App page](https://appshunter.io/ios/app/keyzers-app/id1435813933)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mein OSL

[App page](https://appshunter.io/ios/app/mein-osl/id6749845292)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keyzers App free?

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

### Is Mein OSL free?

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

### Do Keyzers App or Mein OSL have ads?

Neither Keyzers App nor Mein OSL shows ads.

### Which is updated more often, Keyzers App or Mein OSL?

Keyzers App ships an update every 15 months, and Mein OSL every 5 months. Most recently, Keyzers App was updated on September 10, 2026 and Mein OSL on September 10, 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.*