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FOSS Warn

Receive emergency alerts worldwide
New in version 1.0.0
- Extensive overhaul of the app
- Migration of the old APIs to the new FOSS Public Alert Server
- Now with push notifications via UnifiedPush
- Updated texts and translations
- This update requires the app to be set up again
FOSS Warn is an app for receiving global emergency alerts. Whether it's flooding, a tsunami, or bomb disposal, if there's an alert, you'll receive it.

FOSS Warn uses the FOSS Public Alert Server to obtain alerts. This aggregates official feeds with alerts from over 100 countries worldwide.

A list of supported countries can be found here: https://alerts.kde.org/sources/status

Features:
- Receive alerts in over 100 countries worldwide
- Receive push notifications via UnifiedPush
- Display alerts on a map
- Material 3

FOSS Warn and the FOSS Public Alert Server are independent and in no way affiliated with any official authority.

Anti-Features

This app has features you may not like. Learn more!

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.0.0 (38) suggested Added on Sep 13, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 6.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • de.nucleus.foss_warn.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 24 MiB PGP Signature | Build Log

  • Version 0.8.1 (33) - Added on Feb 09, 2025

    arm64-v8a armeabi-v7a x86_64

    This version requires Android 6.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • de.nucleus.foss_warn.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 23 MiB PGP Signature | Build Log

  • Version 0.8.0 (32) - Added on Jan 10, 2025

    arm64-v8a armeabi-v7a x86_64

    This version requires Android 6.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • de.nucleus.foss_warn.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 23 MiB PGP Signature | Build Log