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BinClockWidget

AMOLED-black monochrome binary-clock home-screen widget
New in version 1.1.0
Version 1.1.0

- New settings: Battery warning thresholds are now configurable. Use the number steppers in Settings to adjust when low-battery and very-low-battery warnings appear, tailoring them to your device and usage patterns (defaults: 20% / 10%)
An AMOLED-black, monochrome binary-clock Android home-screen widget.

It renders the current time and date as a 6×4 grid of dots. Cells that would otherwise go unused carry a couple of small extras: the device alarm state and a weather glyph. The aesthetic is deliberately austere — solid dots on true black, no chrome, no colour — so it disappears into an AMOLED wallpaper and sips battery.

How to read it

The face is a grid of rows (values) and columns (place values):

* Rows encode, top to bottom: hours, minutes, day (of month), month.
* Columns are binary place values: 32 · 16 · 8 · 4 · 2 · 1.
* A lit (solid) dot means that place value is on; an unlit dot is off. Add the lit columns in a row to read that row's number.

For example, a minutes row with the 32, 8, and 2 dots lit reads 32 + 8 + 2 = 42.

The cells not needed by the low-value ends of the shorter rows are reused to show the alarm state and a weather condition glyph.

Battery indicator

Between the minutes and day rows sits a battery readout that's always on: a level gauge showing charge percentage, plus a state glyph (charging bolt, low-battery warning triangle, or very-low filled triangle). The warning thresholds are configurable in settings — adjust them to match your device and usage patterns.

Weather, network & privacy

Weather is off by default and opt-in: on a fresh install the widget makes no network or location calls, and no weather glyph is shown. Weather stays entirely dormant until you enter a weather server URL in the widget settings.

When you turn it on, weather uses the keyless Open-Meteo API. Tapping "Use Open-Meteo" fills in the public endpoint (https://api.open-meteo.com/), which is then contacted over the INTERNET permission to fetch current conditions and a short forecast. You can instead point the setting at your own self-hosted Open-Meteo instance — any http(s) URL is accepted.

With weather on, the widget also needs coarse location (ACCESS_COARSE_LOCATION) to fetch conditions for where you are. Location is read via the platform LocationManager only — there are no Google Play Services, no fused/Play location, and no proprietary SDKs. The coordinates are sent only to the weather server you configured, and only while weather is enabled.

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 1.1.0 (6) suggested Added on Aug 17, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

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

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.shiningcat.binclockwidget.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 14 MiB PGP Signature | Build Log

  • New in version 1.0.0
    Version 1.0.0

    - Fix stale day/night weather glyph: the sun/moon icon now reflects the actual time of day, derived at render time from the cached sunrise/sunset times, so it stays correct even after the device has been asleep
    - First stable release
  • Version 1.0.0 (5) - Added on Aug 10, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

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

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.shiningcat.binclockwidget.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 14 MiB PGP Signature | Build Log

  • New in version 0.1.3
    Version 0.1.3

    - Add a proper widget-picker preview: the launcher's "add widget" list now shows a representative binary dot-grid tile (matching the app icon) instead of a blank black square
  • Version 0.1.3 (4) - Added on Aug 04, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

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

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • fr.shiningcat.binclockwidget.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 14 MiB PGP Signature | Build Log