# PrüfApp vs SHK Toolbox von LFDEV

The clearest difference is price: PrüfApp at Free against SHK Toolbox von LFDEV's $2.99. PrüfApp also leads on update cadence (weekly vs every 4 months) and iOS requirement (13.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

PrüfApp is free to download; SHK Toolbox von LFDEV costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PrüfApp ships an update weekly, SHK Toolbox von LFDEV every 4 months. The most recent releases landed on September 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PrüfApp | SHK Toolbox von LFDEV |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 29 MB | 31 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [X-Matic GesmbH](https://appshunter.io/developer/516600840) | [Lukas Fink](https://appshunter.io/developer/1858830591) |

## What reviewers say

### PrüfApp

[App page](https://appshunter.io/ios/app/prufapp/id1586461148)

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

**In-app purchases:** none


### SHK Toolbox von LFDEV

[App page](https://appshunter.io/ios/app/shk-toolbox-von-lfdev/id6756174675)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrüfApp free?

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

### Is SHK Toolbox von LFDEV free?

SHK Toolbox von LFDEV costs $2.99, with no in-app purchases.

### Do PrüfApp or SHK Toolbox von LFDEV have ads?

Neither PrüfApp nor SHK Toolbox von LFDEV shows ads.

### Which is updated more often, PrüfApp or SHK Toolbox von LFDEV?

PrüfApp ships an update weekly, and SHK Toolbox von LFDEV every 4 months. Most recently, PrüfApp was updated on September 17, 2026 and SHK Toolbox von LFDEV 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.*