Riichi Calc - Japanese Mahjong

ad blocks top tab that is important for scoring calculations

10 Jul 2026

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)

18 Jun 2026

Ugh, calculates a closed simples triplet as 2 fu instead of 4. Nevermind, I'll go back to pen and paper.

21 May 2026

The addition of banner ads hides the navigation button for switching the tab to add dora, set wind or riichi etc. The swipe works still but there is no indicator that the second tab exists at all.

7 May 2026

Easy to use, great app to calculate your riichi scores. Maybe add a hint that you need to swipe left (right page) to add the doras etc., it was not very apparent at first.

30 Apr 2026