# KATWARN vs Gau

The clearest difference is update cadence: KATWARN at every 4 months against Gau's every 9 months. KATWARN also leads on iOS requirement (13.0 vs 15.0). 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.

KATWARN ships an update every 4 months, Gau every 9 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KATWARN | Gau |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/katwarn/id566560753/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free | — |
| Size | 5 MB | 6 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CombiRisk - Riskmanagement GmbH](https://appshunter.io/developer/566560756) | [apicodo GmbH](https://appshunter.io/developer/1169099711) |

## What reviewers say

### KATWARN

[App page](https://appshunter.io/ios/app/katwarn/id566560753)

Receive location-based alerts for dangers and disasters across Germany. Get notified about major fires, extreme weather, and other critical events for your current location and up to seven additional chosen areas. The app uses energy-efficient location services to minimize battery drain.

**Highlights:** Location-based alerts for up to 8 locations, Zip code precise warnings, Color-coded warning levels, Energy-efficient battery usage, Real-time danger area notifications, Feedback function

**Features:** Vision Pro support

**In-app purchases:** none


### Gau

[App page](https://appshunter.io/ios/app/gau-weinheim/id6756122891)

**In-app purchases:** none


## Frequently asked questions

### Is KATWARN free?

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

### Is Gau free?

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

### Do KATWARN or Gau have ads?

Neither KATWARN nor Gau shows ads.

### Which is updated more often, KATWARN or Gau?

KATWARN ships an update every 4 months, and Gau every 9 months. Most recently, KATWARN was updated on October 23, 2026 and Gau on October 7, 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.*