# Checkware 4 vs Lechner Service

The clearest difference is update cadence: Checkware 4 at every 6 weeks against Lechner Service's every 17 months. Lechner Service's advantage is iOS requirement (11.0 vs 16.1). 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.

Checkware 4 ships an update every 6 weeks, Lechner Service every 17 months. The most recent releases landed on September 18, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Checkware 4 | Lechner Service |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 17 months |
| Size | 19 MB | 26 MB |
| Requires iOS | 16.1 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [New Solutions GmbH](https://appshunter.io/developer/1126273236) | [AdvanTex Software GmbH & Co. KG](https://appshunter.io/developer/1237550911) |

## What reviewers say

### Checkware 4

[App page](https://appshunter.io/ios/app/checkware-4/id1286629728)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lechner Service

[App page](https://appshunter.io/ios/app/lechner-service/id6462151914)

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

**In-app purchases:** none


## Frequently asked questions

### Is Checkware 4 free?

Checkware 4 is free to download, with no in-app purchases.

### Is Lechner Service free?

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

### Do Checkware 4 or Lechner Service have ads?

Neither Checkware 4 nor Lechner Service shows ads.

### Which is updated more often, Checkware 4 or Lechner Service?

Checkware 4 ships an update every 6 weeks, and Lechner Service every 17 months. Most recently, Checkware 4 was updated on September 18, 2026 and Lechner Service on August 17, 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.*