# KATWARN vs Nister

The clearest difference is update cadence: KATWARN at every 4 months against Nister's every 26 months. KATWARN also leads on iOS requirement (13.0 vs 15). 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, Nister every 26 months. The most recent releases landed on November 13, 2026 and November 14, 2026 respectively.

## The numbers

| Metric | KATWARN | Nister |
| --- | --- | --- |
| 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 26 months |
| Monetization | Free | — |
| Size | 5 MB | 10 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CombiRisk - Riskmanagement GmbH](https://appshunter.io/developer/566560756) | [Verbandsgemeinde Hachenburg](https://appshunter.io/developer/1625636202) |

## 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


### Nister

[App page](https://appshunter.io/ios/app/nister/id1627241644)

**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 Nister free?

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

### Do KATWARN or Nister have ads?

Neither KATWARN nor Nister shows ads.

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

KATWARN ships an update every 4 months, and Nister every 26 months. Most recently, KATWARN was updated on November 13, 2026 and Nister on November 14, 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.*