# Kranprüfer vs safeOS

The clearest difference is update cadence: safeOS at every 2 weeks against Kranprüfer's every 11 months. Kranprüfer's advantage is iOS requirement (11.0 vs 15.0). 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.

Kranprüfer ships an update every 11 months, safeOS every 2 weeks. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Kranprüfer | safeOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Size | 30 MB | 54 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Secumundi GmbH](https://appshunter.io/developer/974668070) | [serviOS GmbH](https://appshunter.io/developer/1801980767) |

## What reviewers say

### Kranprüfer

[App page](https://appshunter.io/ios/app/kranprufer/id507083001)

**Features:** macOS Compatibility

**In-app purchases:** none


### safeOS

[App page](https://appshunter.io/ios/app/safeos/id6743313294)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kranprüfer free?

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

### Is safeOS free?

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

### Do Kranprüfer or safeOS have ads?

Neither Kranprüfer nor safeOS shows ads.

### Which is updated more often, Kranprüfer or safeOS?

Kranprüfer ships an update every 11 months, and safeOS every 2 weeks. Most recently, Kranprüfer was updated on October 16, 2026 and safeOS on October 13, 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.*