# Erlenbrunn vs Undenheim

The clearest difference is update cadence: Undenheim at every 15 months against Erlenbrunn's every 34 months. 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.

Erlenbrunn ships an update every 34 months, Undenheim every 15 months. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Erlenbrunn | Undenheim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 15 months** |
| Size | 5 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stadt Pirmasens](https://appshunter.io/developer/1693384385) | [apicodo GmbH](https://appshunter.io/developer/1169099711) |

## What reviewers say

### Erlenbrunn

[App page](https://appshunter.io/ios/app/erlenbrunn/id6450505214)

**Features:** Vision Pro support

**In-app purchases:** none


### Undenheim

[App page](https://appshunter.io/ios/app/undenheim/id6745123749)

**In-app purchases:** none


## Frequently asked questions

### Is Erlenbrunn free?

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

### Is Undenheim free?

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

### Do Erlenbrunn or Undenheim have ads?

Neither Erlenbrunn nor Undenheim shows ads.

### Which is updated more often, Erlenbrunn or Undenheim?

Erlenbrunn ships an update every 34 months, and Undenheim every 15 months. Most recently, Erlenbrunn was updated on October 8, 2026 and Undenheim on September 29, 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.*