Riichi Calc - Japanese Mahjong

Richard L

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About this app

Riichi Calc is an easy to use app that takes any valid Japanese mahjong hand and calculates all possible winning combinations. A great companion for any Japanese mahjong player! Feel free to e-mail me about any calculation errors.


Features:
　• Used for the Japanese variant of Mahjong
　• Order is irrelevant. The app will rearrange the tiles for you
　• Determine waits of a tenpai hand
　• Provides warnings against illegal combinations (e.g. riichi with an open hand)
　• Calculate points using han and fu as the input
　• Display terminology in English or romanized Japanese

Ratings and reviews

very useful for quickly calculating the score of a hand and identifying yaku patterns. the design is bare but I suppose that doesnt matter so much. my main gripe is that the settings menu is missing some things that could improve the usability of the app and also the calculation results are sometimes difficult to parse. I wish it would more clearly indicate what is being scored. Especially for new players trying to learn the yaku+scoring (who i imagine to be the primary audience of this app)

So idk what happened, but there used to be a tab for switching to the view that allows you to adjust dora, honba, and winds. It's completely gone. I actually came here to say that there must be a bug, until someone else at the table with me figured out that you have to swipe to get there instead. There are no visual indications for this--if I were a new user, I wouldn't even know to look for that page. This is either a bug, or a terrible, terrible design decision.

edit: this is the best riichi calculator I have ever used and the developer fixed a major bug within a day. incredible work and customer support. original review which is no longer factual: used to be amazing but I can't seem to find the conditions tab anymore which is essential to score calculation. will revise to 5 stars when fixed

What’s new

Stability updates