Mahjong Shanten Calculator

Shanten & Improving Tiles

$0.99 · Designed for iPad. Not verified for macOS.

Enter 14 tiles and compare every discard by shanten, improving-tile variety, and tiles remaining—all calculated on your device. Mahjong Shanten Calculator compares every possible discard from a 14-tile Japanese mahjong hand. See which discard keeps the lowest shanten number, which tiles improve the hand next, and how many copies of those tiles remain. FEATURES • Enter characters, circles, bamboo, and honor tiles with a tap • Compare all discard candidates with the best shanten number • View improving-tile types and the total number of copies remaining • Evaluate standard hands, seven pairs, and thirteen orphans together • Calculate instantly and entirely on your device USE IT TO • Review alternative discards after a game • Check the ukeire for a mahjong puzzle • Compare a standard-hand route with seven pairs • Practice tile efficiency as a Japanese mahjong learner No account, ads, analytics, or network connection is required. Improving tiles are calculated from the 14 tiles in your hand only. Visible discards, called tiles, yaku, score, turn number, safety, and other players' hands are not considered. Use the results as a tile-efficiency study aid rather than a complete in-game decision.

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Added English and Traditional Chinese. The interface, instructions, and calculation results now follow your device language.

Version 1.2

The developer, kensuke ueda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • kensuke ueda
    Size
    • 4.4 MB
    Category
    • Games
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 2 more
    • English, Japanese, Traditional Chinese
    Age Rating
    4+
    Copyright
    • © 2026 kensuke ueda
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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