# Dahlem vs LIGNA Audiowalks

The clearest difference is update cadence: LIGNA Audiowalks at every 5 days against Dahlem's monthly. Dahlem's advantage is iOS requirement (9.0 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.

Dahlem ships an update monthly, LIGNA Audiowalks every 5 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Dahlem | LIGNA Audiowalks |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 376 MB | 10 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Max-Planck-Gesellschaft](https://appshunter.io/developer/506613849) | [LIGNA GbR](https://appshunter.io/developer/1573053131) |

## What reviewers say

### Dahlem

[App page](https://appshunter.io/ios/app/dahlem/id1414297920)

Explore the historical Dahlem Campus in Berlin and its former research institutes. Discover stories of Nobel Prize winners, scientific breakthroughs, and the people behind them through an interactive journey.

**Highlights:** Historical campus exploration, Stories of Nobel Prize winners, Scientific discovery narratives, Interactive time travel experience, Biographies of famous scientists

**In-app purchases:** none


### LIGNA Audiowalks

[App page](https://appshunter.io/ios/app/ligna-audiowalks/id1573053129)

**In-app purchases:** none


## Frequently asked questions

### Is Dahlem free?

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

### Is LIGNA Audiowalks free?

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

### Do Dahlem or LIGNA Audiowalks have ads?

Neither Dahlem nor LIGNA Audiowalks shows ads.

### Which is updated more often, Dahlem or LIGNA Audiowalks?

Dahlem ships an update monthly, and LIGNA Audiowalks every 5 days. Most recently, Dahlem was updated on October 1, 2026 and LIGNA Audiowalks on October 4, 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.*