# Rathaus AC vs KHM App

The clearest difference is in-app purchases: Rathaus AC at none against KHM App's 3. Rathaus AC also leads on review sentiment (100% vs 82%) and iOS requirement (10.0 vs 16.0). KHM App's advantage is update cadence (fortnightly vs every 20 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. KHM App sells 3 one-off in-app purchases. Rathaus AC asks for nothing beyond the download.

Rathaus AC ships an update every 20 months, KHM App fortnightly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Rathaus AC | KHM App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (31 ratings)](https://appshunter.io/ios/app/khm-app/id1079305093/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | **100.0% of reviews** | 81.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 97 MB | 45 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [RWTH Aachen University](https://appshunter.io/developer/371466796) | [KHM-Museumsverband](https://appshunter.io/developer/1079305092) |

## What reviewers say

### Rathaus AC

[App page](https://appshunter.io/ios/app/rathaus-ac/id923289759)

Explore over 1200 years of history of the Aachen City Hall through modern technology. This app offers a virtual tour of all rooms, including those not usually accessible to the public, and allows you to listen to the carillon.

**Highlights:** 360° virtual tours, Access to restricted rooms, Carillon audio playback, 1200+ years of history, Modern technological exploration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### KHM App

[App page](https://appshunter.io/ios/app/khm-app/id1079305093)

Explore famous and hidden artworks with interactive guidance. Discover hidden details and perspectives, like x-ray views or the back of paintings. Engage with art through interactive elements that connect the past to the present.

**Highlights:** Guided art tours, Interactive elements, Hidden artwork perspectives, Museum navigation, Multi-language support, Children's tours

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magie Tour | $0.99 | one-time |
| Superpower! | $0.99 | one-time |
| Building Bodies | $0.99 | one-time |


## Frequently asked questions

### Is Rathaus AC free?

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

### Is KHM App free?

KHM App is free to download, with in-app purchases available.

### Do Rathaus AC or KHM App have ads?

Neither Rathaus AC nor KHM App shows ads.

### Which is updated more often, Rathaus AC or KHM App?

Rathaus AC ships an update every 20 months, and KHM App fortnightly. Most recently, Rathaus AC was updated on November 1, 2026 and KHM App on November 2, 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.*