# CSD Düsseldorf vs EFMapp

The clearest difference is update cadence: EFMapp at monthly against CSD Düsseldorf's every 11 months. CSD Düsseldorf's advantage is iOS requirement (12.0 vs 15.6). 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.

CSD Düsseldorf ships an update every 11 months, EFMapp monthly. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CSD Düsseldorf | EFMapp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Size | 11 MB | 19 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [online-Forum GmbH](https://appshunter.io/developer/1125974529) | [Lars Petersen](https://appshunter.io/developer/1639804444) |

## What reviewers say

### CSD Düsseldorf

[App page](https://appshunter.io/ios/app/csd-dusseldorf/id1374151685)

**Features:** macOS Compatibility

**In-app purchases:** none


### EFMapp

[App page](https://appshunter.io/ios/app/efmapp/id1639804442)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSD Düsseldorf free?

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

### Is EFMapp free?

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

### Do CSD Düsseldorf or EFMapp have ads?

Neither CSD Düsseldorf nor EFMapp shows ads.

### Which is updated more often, CSD Düsseldorf or EFMapp?

CSD Düsseldorf ships an update every 11 months, and EFMapp monthly. Most recently, CSD Düsseldorf was updated on October 2, 2026 and EFMapp on October 1, 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.*