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Casio G-Shock Smart Sync

Add smart functions to your Casio square BT G-Shock (B5600, B5000, B2100)
New in version 14.3
Various fixes related to Android 14 connectivity.
Note: We now support the B2100 series of G-Shock watches!

I think we can do better than the official G-Shock Connected App! This app provides the following extra features:

- Sets watch's reminders from Google Calendar
- Automatically sets correct timezone when travelling. No need to switch between Word Time and Home time
- Use your watch to trigger actions on your phone remotely, like taking pictures, dialling a phone number, etc.
- Auto-configure most watch settings from phone's configuration.
- Phone's alarms can be synced with watch's alarms.
- Super fast connection time: 3.5 seconds vs 12 seconds for the official app.

Supported Watches
=================
G(M)W-5600, G(M)W-5000, GA-B2100, GST-B500, MSG-B100, G-B001, GBD-800 (Partial support), MRG-B5000, GCW-B5000

Setting Time
============
The local time can be set from the main screen by pressing the Send to Watch
button next to the current time display. The app uses your current location to
get the local lime. You can then set the watch time accordingly, without having
to change your World Time selection on the watch.

This screen also shows your Home Time location and battery level.

Alarms
======
The B5600/B5000/B2100 watches have 5 alarms and a Signal or chime setting. They are first read
from the watch, and displayed in the app. The alarms can be updated by pressing
on the time display of each alarm. A dialog will appear which allows you to
select the time.

Once the alarms have been set, you can send them to the watch, or send them to
the Alarm Clock app on the phone. Unfortunately, there is currently no way to
read the alarms from the AlarmClock app programmatically, so we cannot set the
watch alarms from this app. However, we can set the Alarm Clock app with the
watch's alarms.

Events
======
This screen displays Events from your Google Calendar and allows you to send
these events to the watch's reminders.

Events could be one time, repeating daily, weekly, monthly or yearly, or some complex period
such as every second Thursday of the month. Not all event types can be supported on the watch, but this app
attempts to adopt the calendar events to the watch as much as possible. The
only not supported event types are daily and complex events, such as every
second Thursday of the month. Events occurring number of times are simulated on the watch with
a start and end date, matching the event start time, count and frequency.
In case the calendar event cannot be adopted to a watch reminder, the app
will display the event as Incompatible. Only future events and recurring
events which have not expired are displayed.

The watch only supports all-day reminders. However, if the Google calendar
event has a specific time, it will still be used as a day reminder on the watch.

Actions
=======
The selected actions are run when the user short-presses the lower-right watch
button from disconnected mode (initial screen).

Using these actions, the watch acts like a remote control for your phone.

Where are my World Cities?
==========================
Using an app to manually swap between Home Time and World Time is a bit silly.
Your phone already knows where you are. When setting time, this app will also
set the Home Time, Timezone and DST state to your current location.
So when travelling to another timezone, just set time and you are good to go.

Build Your Own App
==================
For those who want to build their own Android app for interfacing with the G-Shock 5000/5600/B2100 watches,
I have also created an API (library) project here: https://github.com/izivkov/GShockAPI.



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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 14.3 (143) suggested Added on Nov 05, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, 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.
    • access precise location only in the foreground
      This app can get your precise 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. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • directly call phone numbers
      Allows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • 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.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.android.alarm.permission.DISMISS_ALARM
    • set an alarm
      Allows the app to set an alarm in an installed alarm clock app. Some alarm clock apps may not implement this feature.
    • org.avmedia.gshockGoogleSync.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

  • Version 14.2 (142) - Added on Aug 31, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, 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.
    • access precise location only in the foreground
      This app can get your precise 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. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • directly call phone numbers
      Allows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • 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.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.android.alarm.permission.DISMISS_ALARM
    • set an alarm
      Allows the app to set an alarm in an installed alarm clock app. Some alarm clock apps may not implement this feature.
    • org.avmedia.gshockGoogleSync.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

  • Version 14.1 (141) - Added on Aug 12, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, 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.
    • access precise location only in the foreground
      This app can get your precise 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. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
      (11)
    • access Bluetooth settings
      Allows the app to configure the local Bluetooth phone, and to discover and pair with remote devices.
      (11)
    • connect to paired Bluetooth devices
      Allows the app to connect to paired Bluetooth devices
    • discover and pair nearby Bluetooth devices
      Allows the app to discover and pair nearby Bluetooth devices
    • directly call phone numbers
      Allows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • 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.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.android.alarm.permission.DISMISS_ALARM
    • set an alarm
      Allows the app to set an alarm in an installed alarm clock app. Some alarm clock apps may not implement this feature.
    • org.avmedia.gshockGoogleSync.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log