Mahjong Riichi Calculator works out the score of a Japanese Riichi Mahjong
winning hand for you — han, fu and the final points — so you never have to argue
over the count again.
Two ways to enter a hand:
• Scan it — point your camera at your winning tiles and the app detects them on
your device. Tiles are sorted automatically so you can quickly fix any misread.
• Enter it by hand — tap to add tiles in a fast, drag-and-drop editor.
Then the app:
• Splits your hand into its sequences, triplets, pairs and quads
• Lets you mark called (open) melds and the winning tile
• Asks the usual questions — Riichi, Tsumo, Ippatsu, dora, round/seat winds and more
• Shows the full breakdown: every yaku, the fu count, and the points to pay
It handles the tricky cases correctly — seven pairs, thirteen orphans, the
yakuman, pinfu, sanshoku, pure straight and proper rounding — using a faithful
implementation of standard Riichi scoring.
Everything runs entirely on your device. No account, no internet needed to score
a hand, and nothing about your hands or photos is collected, stored or shared.
Perfect for players learning to count, settling end-of-hand scores quickly, or
checking their own math.
