# Ortelium vs Robben.App Pro

The clearest difference is update cadence: Ortelium at every 2 months against Robben.App Pro's every 5 months. Ortelium also leads on device support (3 vs 1) and iOS requirement (10.0 vs 16.4). 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.

Ortelium ships an update every 2 months, Robben.App Pro every 5 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Ortelium | Robben.App Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 1 MB | 46 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Olfasense GmbH](https://appshunter.io/developer/1450633157) | [Landesbetrieb fuer Kuestenschutz, Nationalpark und Meeresschutz Schleswig-Holstein](https://appshunter.io/developer/1705383767) |

## What reviewers say

### Ortelium

[App page](https://appshunter.io/ios/app/ortelium/id1450633158)

**Features:** macOS Compatibility

**In-app purchases:** none


### Robben.App Pro

[App page](https://appshunter.io/ios/app/robbenapp-pro/id6464050298)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ortelium free?

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

### Is Robben.App Pro free?

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

### Do Ortelium or Robben.App Pro have ads?

Neither Ortelium nor Robben.App Pro shows ads.

### Which is updated more often, Ortelium or Robben.App Pro?

Ortelium ships an update every 2 months, and Robben.App Pro every 5 months. Most recently, Ortelium was updated on October 26, 2026 and Robben.App Pro on October 25, 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.*