3.1
11.6K reviews
1M+
Downloads
Content rating
Everyone
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About this app

KATWARN transmits hazard warnings, recommendations for action, and information to affected citizens in Germany on behalf of authorities and security organizations. KATWARN also acts as a multiplier for warnings from the Federal Government's Modular Warning System (MoWaS / NINA app).

The KATWARN app is provided by CombiRisk Risk-Management GmbH. The content, timing, and scope of the alerts are determined solely by the authorized authorities and security organizations that use KATWARN, not by CombiRisk.

Since responsibility for warnings in Germany is distributed among various agencies depending on the hazard situation, the use of KATWARN may vary regionally. Please contact your local district or city for information on the systems used locally.

KATWARN provides location-based notifications about hazards such as major fires or extreme weather events. Users can choose to receive alerts for their current location and up to seven additional locations of their choice. This selection can be changed, adjusted, or deactivated at any time.

The app offers the following features:

• Active notification (push alerts) about hazards for up to eight locations: in addition to your current location (the "guardian angel"), you can select up to seven other locations
• Postcode-specific warnings for the selected locations with warning texts and color-coded alert levels
• Continuous, anonymized updates of location information, eliminating the need for manual location input
• Immediate notification upon entering a current hazard zone
• Free topic subscriptions (e.g., for food recalls) via the KATWARN website

• Energy-efficient location tracking via base stations and Wi-Fi access points (not GPS) minimizes battery drain

• Feedback function for sending feedback to the app provider

A working data connection (Wi-Fi or mobile network) is required to receive warnings and information.

For questions and bug reports, please contact support@katwarn.de or visit http://www.katwarn.de.
Updated on
Oct 30, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.1
11K reviews
John Doe (syl160)
August 28, 2022
'Location services are available - guardian is being activated.' This notification appears multiple times per day, for weeks on end. Other than these notifications, the app doesn't seem to do anything. Has anybody actually ever been warned by this thing? Or does it just send senseless notifications about a guardian, who doesn't guard anything except the location? Android 11, latest Katwarn update is installed. Edit: update installed, looks like it stopped now, big relief!
22 people found this review helpful
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Dobby Lollipop
May 28, 2022
Edit: guardian mode does work now... but a little too well ... 24 bings "guadian Mode is available" within 2 minutes, 10 minutes after leaving my house (still in the area i chose as one of my favorites) Would be great to have a setting that makes "hello your guardian mode is available" silent :)
4 people found this review helpful
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Derek D
May 23, 2022
20+ notifications in one hour about guardian angel location services being available. I had to disable guardian angel to avoid the excessive notifications - none of which were weather/environmental. Update: disabling Guardian Angel isn't enough, I'm getting bombarded with these location services is now available notifications, I've had to uninstall Katwarn. They also don't seem to read their reviews either so this is pointless.
40 people found this review helpful
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What’s new

Enthält Stabilisierungen und Optimierungen.

App support

About the developer
CombiRisk Risk-Management GmbH
service@combirisk.de
Maximilianstr. 53 80538 München Germany
+49 89 21606500