# Karl vs Clean Flag

The clearest difference is in-app purchases: Karl at none against Clean Flag's 3. Karl also leads on iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Clean Flag sells 3 one-off in-app purchases. Karl asks for nothing beyond the download.

## The numbers

| Metric | Karl | Clean Flag |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Daily |
| Monetization | Free | — |
| Size | 42 MB | 105 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [KULDIG](https://appshunter.io/developer/1315396634) | [Jens Stoeber](https://appshunter.io/developer/6775767539) |

## What reviewers say

### Karl

[App page](https://appshunter.io/ios/app/karl-marx-haus/id6478696475)

Explore the Museum Karl-Marx House with virtual tours and directions. Access exhibition texts in multiple languages and audio guides to deepen your understanding of the exhibits.

**Highlights:** Virtual tours and directions, Exhibition texts in 7 languages, Audio guides in German and English, Interactive site map, Historical exhibition slider

**In-app purchases:** none


### Clean Flag

[App page](https://appshunter.io/ios/app/clean-flag/id6775767537)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stern 300 | $0.99 | one-time |
| Stern 1000 | $2.00 | one-time |
| Clean Flag Pro | $3.99 | one-time |


## Frequently asked questions

### Is Karl free?

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

### Is Clean Flag free?

Clean Flag is free to download, with in-app purchases available.

### Do Karl or Clean Flag have ads?

Neither Karl nor Clean Flag 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.*