# Robben.App vs Einfach verstehen

The clearest difference is in-app purchases: Robben.App at none against Einfach verstehen's 1. Einfach verstehen's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Einfach verstehen sells 1 in-app purchase, starting at $1.99 per 7 days. Robben.App asks for nothing beyond the download.

## The numbers

| Metric | Robben.App | Einfach verstehen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 51 MB | 3 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Landesbetrieb fuer Kuestenschutz, Nationalpark und Meeresschutz Schleswig-Holstein](https://appshunter.io/developer/1705383767) | [Relativity GmbH](https://appshunter.io/developer/1472588913) |

## What reviewers say

### Robben.App

[App page](https://appshunter.io/ios/app/robbenapp/id6464050244)

**Features:** Vision Pro support

**In-app purchases:** none


### Einfach verstehen

[App page](https://appshunter.io/ios/app/einfach-verstehen/id6755065516)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per 7 days |


## Frequently asked questions

### Is Robben.App free?

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

### Is Einfach verstehen free?

Einfach verstehen is free to download, with in-app purchases available.

### Do Robben.App or Einfach verstehen have ads?

Neither Robben.App nor Einfach verstehen shows ads.

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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.*