We're a mahjong group in Oxford who play the Western parlour game, the version played by u3a groups, BMJA-leaning clubs, and similar circles across Britain. We built these tools for ourselves: a full game with a built-in coach, and a companion score calculator. Both play and score the game the way we actually play it, not the American, Japanese, or Chinese versions you'll find in most apps. A portion of any sales goes to UK charities supporting mental health and tackling loneliness in older adults.