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Flash Alert (Calls & SMS)

Blink the terminal when receiving a call, SMS or an application notification
New in version 2.6.6
- Fixed a startup and notification crash on Android 9 devices (#60).
- Fixed English language fallback on multi-locale devices and updated translations (#59).
Flash Alert turns your camera flash into a powerful visual indicator whenever you receive a call, SMS/MMS, or notification from another app (WhatsApp, social media, etc.).

Key Features:
- Customizable flash alerts for calls, messages, and apps.
- Contact filtering: enable the flash only for your contacts.
- Battery-saver mode: smart deactivation if the phone is face down or if the screen is already on.
- Night mode and "Do Not Disturb" override options.
- Ambient noise detection (for compatible Android versions).

A lightweight app, privacy-friendly, and completely ad-free.

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.

Download F-Droid
  • Version 2.6.6 (23384371) suggested Added on Jun 22, 2026

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • android.permission.FLASHLIGHT
    • run foreground service
      Allows the app to make use of foreground services.
    • query all packages
      Allows an app to see all installed packages.
    • read call log
      This app can read your call history.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • 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.
    • receive text messages (MMS)
      Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • receive text messages (SMS)
      Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • 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.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.jnda.android.flashalert.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.9 MiB PGP Signature | Build Log

  • New in version 2.6.5
    - Flash is now optional for tablets (#50).
    - Ongoing notifications (GPS, weather) are ignored (#56).
    - App list: selected at top (#54), active highlighted (#55).
    - Added Battery Guard (#47) and on-demand logs (#49).
    - Removed Noise Detector (#46).
    - Added vibe (#52) and sound profiles support (#53) for reminders.
    - Improved alarm reliability (#45) and DnD support (#51).

    Merci à nut pantz !
  • Version 2.6.5 (23384370) - Added on Jun 11, 2026

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • android.permission.FLASHLIGHT
    • run foreground service
      Allows the app to make use of foreground services.
    • query all packages
      Allows an app to see all installed packages.
    • read call log
      This app can read your call history.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • 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.
    • receive text messages (MMS)
      Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • receive text messages (SMS)
      Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • 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.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.jnda.android.flashalert.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.9 MiB PGP Signature | Build Log

  • New in version 2.6.4
    - Added an interactive permission diagnostics dashboard to easily test and grant permissions.
    - Optimized repeating notification reminders for maximum reliability in Doze mode.
    - Added finer delay and reminder interval options (1, 2, and 5 minutes) (#42).
    - Resolved system lifecycle exceptions and auto-pruned legacy WorkManager tasks.
    - Integrated Permissions.md documentation file and updated the About screen.
  • Version 2.6.4 (23384369) - Added on May 29, 2026

    This version requires Android 7.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • android.permission.FLASHLIGHT
    • run foreground service
      Allows the app to make use of foreground services.
    • query all packages
      Allows an app to see all installed packages.
    • read call log
      This app can read your call history.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • 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.
    • receive text messages (MMS)
      Allows the app to receive and process MMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • receive text messages (SMS)
      Allows the app to receive and process SMS messages. This means the app could monitor or delete messages sent to your device without showing them to you.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • 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.
    • Schedule alarms or event reminders
      This app can schedule actions like alarms and reminders to notify you at a desired time in the future.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.jnda.android.flashalert.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.7 MiB PGP Signature | Build Log