# SAFE App vs Den Krøllede Hjerne

The clearest difference is update cadence: Den Krøllede Hjerne at every 4 weeks against SAFE App's every 6 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.

SAFE App ships an update every 6 months, Den Krøllede Hjerne every 4 weeks. The most recent releases landed on September 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SAFE App | Den Krøllede Hjerne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Size | 55 MB | 52 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Region Sjælland](https://appshunter.io/developer/539412983) | [Den Krøllede Hjerne](https://appshunter.io/developer/1895736134) |

## What reviewers say

### SAFE App

[App page](https://appshunter.io/ios/app/safe-app/id1434043583)

**Features:** macOS Compatibility

**In-app purchases:** none


### Den Krøllede Hjerne

[App page](https://appshunter.io/ios/app/den-krllede-hjerne/id6764331073)

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

**In-app purchases:** none


## Frequently asked questions

### Is SAFE App free?

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

### Is Den Krøllede Hjerne free?

Den Krøllede Hjerne is free to download, with no in-app purchases.

### Do SAFE App or Den Krøllede Hjerne have ads?

Neither SAFE App nor Den Krøllede Hjerne shows ads.

### Which is updated more often, SAFE App or Den Krøllede Hjerne?

SAFE App ships an update every 6 months, and Den Krøllede Hjerne every 4 weeks. Most recently, SAFE App was updated on September 20, 2026 and Den Krøllede Hjerne on October 8, 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.*