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Riichi Mahjong Calculator

Riichi Mahjong Calculator, featuring hand efficiency calculation, and more.
Riichi Mahjong Calculator, supporting features such as hand
efficiency, meld hand efficiency, winning hand analysis,
and score calculation for fan and minipoints.

- Hand Efficiency: Includes tile efficiency, good-shape tile
efficiency (for one-shanten only), and backwards strategy.

- Meld Hand Efficiency: Tile efficiency for chow, pung, kong,
and pass; includes good-shape tile efficiency (for one-shanten only)
and backwards strategy.

- Winning Hand Analysis: Defaults to Mahjong Soul/Tenhou rules,
with customizable rules to some extent.

- Score Calculation By Fan and Minipoints: Defaults to Mahjong Soul/Tenhou
rules, with customizable rules to some extent.
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot

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 (10102) suggested Added on Aug 07, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

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

    Permissions
    • 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.
    • android.permission.READ_CLIPBOARD
    • android.permission.WRITE_CLIPBOARD
    • io.ssttkkl.mahjongutils.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 30 MiB PGP Signature | Build Log

  • Version 1.0.14 (10014) - Added on Apr 22, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

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

    Permissions
    • android.permission.READ_CLIPBOARD
    • android.permission.WRITE_CLIPBOARD
    • io.ssttkkl.mahjongutils.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 3.4 MiB PGP Signature | Build Log

  • Version 1.0.13 (10013) - Added on Apr 09, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

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

    Permissions
    • android.permission.READ_CLIPBOARD
    • android.permission.WRITE_CLIPBOARD
    • io.ssttkkl.mahjongutils.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 3.4 MiB PGP Signature | Build Log

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