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Calendar

The only fully-functional open-source calendar app with Material You
The only fully-functional open-source calendar app with Material You.

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 1.1 (2) suggested Added on Jan 09, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 12 or newer.

    It is built and signed by the original developer, 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • 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.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • com.vayunmathur.calendar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 25 MiB PGP Signature | Build Log

  • Version 1.0 (1) - Added on Jan 06, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 12 or newer.

    It is built and signed by the original developer, 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • 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.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • com.vayunmathur.calendar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 46 MiB PGP Signature | Build Log