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Lux Alarm

Wake up with light! This alarm can only be turned off when your room is bright
New in version 2.1.0
- Custom ringtone selection for alarms
- Improved font size and spacing
Stop Oversleeping with Lux Alarm

Tired of hitting snooze and waking up late? Lux Alarm ensures you actually get out of bed by requiring light to silence the alarm.

How it works

To stop the alarm, you must get up and open your blinds or turn on the light. The app uses your phone's sensor to detect brightness; by the time the alarm turns off, you are already on your feet and ready to start your day.

Key Features

• Smart Light Detection: Uses your phone's sensor to ensure the alarm only deactivates once your environment is bright.
• Adjustable Sensitivity: Customize the required light level to account for gloomy weather or different room setups.
• Modern Interface: A clean, intuitive design based on Material Design 3 for easy navigation.
• Circadian Support: Waking up with light helps regulate your natural sleep cycle and reduces morning grogginess.

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 2.1.0 (7) suggested Added on Feb 16, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • disable your screen lock
      Allows the app to disable the keylock and any associated password security. For example, the phone disables the keylock when receiving an incoming phone call, then re-enables the keylock when the call is finished.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "systemExempted"
      Allows the app to make use of foreground services with the type "systemExempted"
    • 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.
    • 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.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked 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.
    • com.dsalmun.luxalarm.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.2 MiB PGP Signature | Build Log

  • New in version 2.0.1
    - Replace SYSTEM_ALERT_WINDOW with full-screen intent for alarm display
  • Version 2.0.1 (6) - Added on Feb 10, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • disable your screen lock
      Allows the app to disable the keylock and any associated password security. For example, the phone disables the keylock when receiving an incoming phone call, then re-enables the keylock when the call is finished.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "systemExempted"
      Allows the app to make use of foreground services with the type "systemExempted"
    • 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.
    • 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.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked 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.
    • com.dsalmun.luxalarm.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.2 MiB PGP Signature | Build Log

  • New in version 1.1.0
    Settings view: now you can define the amount of lux needed to turn off alarm
  • Version 1.1.0 (4) - Added on Jan 05, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • disable your screen lock
      Allows the app to disable the keylock and any associated password security. For example, the phone disables the keylock when receiving an incoming phone call, then re-enables the keylock when the call is finished.
    • show notifications
      Allows the app to show notifications
    • 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.
    • This app can appear on top of other apps
      This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked 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.
    • com.dsalmun.luxalarm.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.2 MiB PGP Signature | Build Log