Tensu Navi: Mahjong Score Calc

Pick the tiles of your winning hand and tap Calculate. The app shows every fan (or tai, or yaku), the total, and how much each player pays.

■ Five rule sets in one app
・Chinese Official (Mahjong Competition Rules, 81 fan): all fan combined by the five principles, 8 points to win, flowers, base 8
・Hong Kong: Hong Kong Mahjong Association tournament rules, or a house-rule preset (unofficial) whose disputed points you can change — cap 8 / 10 / 13, half or full spicy, discarder pays all / half
・Taiwanese 16 tiles: tournament rules (Mahjong Masters, unofficial) or house rules (unofficial), with dealer and dealer streak tai, flowers, and your own base and tai
・Japanese riichi, 4-player and 3-player (with fu breakdown)

■ What you can enter
・Called sets (chi, pon, kong, added kong, concealed kong) and flowers
・Round and seat wind, self-drawn or discard, and who discarded
・How you won: last tile, replacement tile, robbing the kong, heavenly / earthly hands and more
・Hong Kong liability (12-tile, Big Dragons, kong) — choose who is liable

■ Results you can check at the table
・Every fan / tai with its value, the total, limit hands and caps
・Payments for each of the other three players (left, across, right)
・Taiwanese: the tai each player pays, including the dealer's extra tai

■ Your hands stay on your phone
・Everything is calculated on the device. No sign-in.

Scoring differs between tables and venues. When in doubt, match the settings to your table.