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About this app

--- Attention: To read the data of the warning app, the app needs root rights. Without root rights, it can only be used together with the RaMBLE app or with the CCTG app / microG. ---

The Warn-App-Companion-App helps you to better understand and classify messages from the Warn-App.

What the app does:
1. The app reads - if it has root rights - the Rolling Proximity IDs recorded by your device from the database.
Alternatively, the app can also read a database exported from the RaMBLE app or from microG (even without root rights).
2. The app loads the positive keys from warning servers in the countries you have selected. It loads e.g. for Germany the keys published daily for the last few days and the keys published every hour for today. The positive keys of the last 14 days are displayed.
3. The app compares both in order to find matches (risk encounters).

If risk encounters are found, it shows the details:
At what times and with what radio attenuation (roughly corresponds to the distance) did the encounters take place, and what level of risk did the encounter have.
In RaMBLE mode, the position of the encounter can also be displayed, because the RaMBLE app saves a geoposition for each entry.

What the app doesn't do:
- The app does not process any personal data.
- The app only accesses the internet for the above Purpose 2 to, i.e. it only loads data from warning servers and it does not send any data to other servers (unless you activate the map display in RaMBLE mode, then it loads a map from OpenStreetMap servers).
- The app does not show any advertising.

Open Source:
The source code of the app is published on GitHub (https://github.com/mh-/), so you can check the source code, build the app yourself and you are welcome to contribute to improvements.

Supported countries:
From the German warning app server:
- Germany, Denmark, Ireland, Italy, Croatia, Latvia, Netherlands, Poland, Spain and Cyprus
From servers of the respective countries:
- Austria
- Belgium
- Canada
- Czech Republic
- Netherlands
- Poland
- Switzerland
- England and Wales

The countries can be selected via the menu at the top right of the app.

- The app is used for private purposes only, it is not used for any business purposes.
- The app is not a "hacking tool". It only reads data from the memory of your own device, which is stored there unencrypted.
Updated on
Apr 3, 2022

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
No data collected
Learn more about how developers declare collection

What's new

"CCTG Modus (root)" ist jetzt "CCTG Import", und man muss in diesem Modus eine Datei auswählen. Diese Datei kann z.B. auch von einem anderen Gerät stammen, was sich viele User gewünscht haben.
Außerdem wurde die Logik geändert, die es ermöglicht, weniger als 10 Tage zu wählen, wenn beim App Start 10 Tage ausgewählt sind (das macht bei Geräten Sinn, die mit 10 Tagen zzt. überlastet sind).