# KATWARN vs Oberzissen

The clearest difference is iOS requirement: KATWARN at 13.0 against Oberzissen's 15.0. On price, update cadence, ads and in-app purchases 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, Oberzissen every 5 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KATWARN | Oberzissen |
| --- | --- | --- |
| 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 5 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


### Oberzissen

[App page](https://appshunter.io/ios/app/oberzissen/id6760105267)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KATWARN free?

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

### Is Oberzissen free?

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

### Do KATWARN or Oberzissen have ads?

Neither KATWARN nor Oberzissen shows ads.

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

KATWARN ships an update every 4 months, and Oberzissen every 5 months. Most recently, KATWARN was updated on October 29, 2026 and Oberzissen on October 25, 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.*