# LEHMANN Config vs Mars Rock E

The clearest difference is update cadence: Mars Rock E at monthly against LEHMANN Config's every 30 months. Mars Rock E also leads on device support (3 vs 1) and iOS requirement (15.5 vs 18.6). On price, ads and in-app purchases there is nothing between them.

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

LEHMANN Config ships an update every 30 months, Mars Rock E monthly. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | LEHMANN Config | Mars Rock E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Monthly** |
| Size | 4 MB | 22 MB |
| Requires iOS | 18.6 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Lehmann Vertriebsges. mbH & Co. KG](https://appshunter.io/developer/980603055) | [Xiamen Mars Rock Science Technology Co.,Ltd](https://appshunter.io/developer/1787113189) |

## What reviewers say

### LEHMANN Config

[App page](https://appshunter.io/ios/app/lehmann-config/id6449590739)

**In-app purchases:** none


### Mars Rock E

[App page](https://appshunter.io/ios/app/mars-rock-e/id6739800863)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LEHMANN Config free?

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

### Is Mars Rock E free?

Mars Rock E is free to download, with no in-app purchases.

### Do LEHMANN Config or Mars Rock E have ads?

Neither LEHMANN Config nor Mars Rock E shows ads.

### Which is updated more often, LEHMANN Config or Mars Rock E?

LEHMANN Config ships an update every 30 months, and Mars Rock E monthly. Most recently, LEHMANN Config was updated on September 17, 2026 and Mars Rock E on September 15, 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.*