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Riichi Mah-jong Helper

Riichi Mah-jong Helper

Score, Efficiency & Practice

1 ratings
53 reviews
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Details

  • Released
  • Updated
  • December 29, 2017
  • July 25, 2026

Features

Developer

Kyohei Hakka
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Riichi Mah-jong Helper screenshot #1 for iPhone
Riichi Mah-jong Helper screenshot #2 for iPhone
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🧾$3.99 - $34.99
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About

This app helps you calculate Mahjong scores and practice your hand efficiency. It can determine winning tiles, scores, and optimal plays from a given hand. It also offers quiz modes for both score calculation and tile efficiency practice.

✓Calculate Mahjong scores from tile arrangements
✓Practice score calculation with quizzes
✓Calculate effective tiles for a given hand
✓Practice tile efficiency with quizzes
✓Determine winning tiles and potential scores
✓Analyze optimal plays for discarding and calling melds
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+1

What's New in Riichi Mah

4.17.0

July 25, 2026

[Bug Fixes] - Fixed an issue in the score calculator where a hand of only terminals and honors was shown as Chanta instead of Honitsu-Routou (All Terminals and Honors)

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Subscription plans

プレミアムプラン

全ての機能を快適に利用可能なプレミアムプランへの加入です。

$2.991 Month
How to cancel Riichi Mah subscription ⁉️
2

In-App Purchases

$19.99

生涯プレミアム（セール）

セール価格の生涯プレミアム機能

User reviews

Most RecentHighest RatedLowest Rated

修正おねがいします！

いつも使わせてもらってます！！

①点数計算練習で一発の表示がないのに解答で一発が適用されてしまっているときがあります。

②点数計算機として使った時、

1s1s1m1m2m2m2m3m3m
鳴き:9p9p9p
1mロン和了

とすると、高点法により
正)対々和 2飜40符 2600点
となるところが、
誤)純全帯么九 2飜30符 2000点
となってしまいます。


よろしくお願いします！！
cojjppamwcojjppamw

Response from developer

ご指摘ありがとうございます。こちら4.16.0として修正して提出いたしました。 点数計算については、 食い下がり判定前の役リストで、高い方を採用するバグになってしまっておりました🙇

やりずらくなった

前は隙間時間に軽くできたのに今は課金制
しかも問題の出し方も変わっていてやりずらくなった。回答も下二桁は00着いてたのに無くなったしもう使わない。

追記
バグなのか知らんが回答を入力すると全く違う問題に切り替わって不正解にされる。もう消すわ。久々に開いたけどこれはやばい
カズマキングカズマキング

うわなんか課金制になった

せめて最初の買い切りにしてくれよ、流石に月440円出すなら要らん
とある芋の精霊とある芋の精霊

なんとかしてくれ

有効牌の練習でツモってることが割とある。それ以外はとても有用です
おおはそおおはそ

牌を押すと反応が悪い！

すぐに解りたいのに完成図を作るのに5分かかる
山岡さんの家山岡さんの家
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FAQ

What does this Mahjong app do?

This app is a Mahjong calculator that helps you calculate scores from tile arrangements, practice score calculation through quizzes, and determine effective tiles for your hand. It also offers quizzes for practicing tile efficiency and identifying optimal plays.

What are the key features of this Mahjong calculator?

Key features include calculating scores (winning tiles, points, yaku, mentsu, fu) from a tile arrangement, practicing score calculation with input quizzes, calculating effective tiles from a 13-tile hand, and practicing tile efficiency with 'what to discard' and 'what is effective' quizzes.

How much does the premium plan cost?

The premium plan is available for a monthly subscription of 200 JPY, which automatically renews each month. This plan removes all advertisements and unlocks all features within the app.

Can I use this app on multiple devices or after changing my phone?

Yes, if you have purchased the paid version, you can restore it for free when changing devices. Ensure you are logged into iTunes with the same Apple ID used for the original purchase on your iPhone or iPad.

How can I cancel my subscription?

To cancel your subscription, open the App Store app, scroll to the bottom, select 'Featured', then your Apple ID, and choose 'View Apple ID'. Under 'Subscriptions', select 'Manage' and then 'Mahjong Calculator' to confirm the next auto-renewal date or to cancel the automatic renewal.