# Riichi Mah-jong Helper — Score, Efficiency & Practice

> Mahjong score calculator and tile efficiency trainer with practice quizzes. (iPhone/iPad app by Kyohei Hakka.)

- Source: https://appshunter.io/ios/app/riichi-mah-jong-helper/id1329138513 (this page in markdown: same URL + `.md`)
- Developer: [Kyohei Hakka](https://appshunter.io/developer/1279110012)
- Category: Games, Entertainment, Board, Casino
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 53 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 607 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Hong Kong SAR China)
- Released: 2017-12-29
- Data updated: 2026-08-31
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/riichi-mah-jong-helper/id1329138513/reviews.md

## What is Riichi Mah?

◉ Calculate mahjong hand scores instantly!
◉ Practice score calculation with quiz-style questions!
◉ Calculate effective tiles for any hand!
◉ Practice tile efficiency with auto-generated quizzes!

Mahjong Score Calc II is a powerful calculator with 4 core features:
1. Score calculation from your hand (waiting tiles, points, yaku, mentsu, fu breakdown)
2. Score practice quizzes (han/fu input and point input modes)
3. Effective tile calculation for any 13-tile hand (draw, call)
4. Tile efficiency quizzes (best discard, best draw, best call, effective tiles)

This app is a complete upgrade to the score calculator tools that have long existed for riichi mahjong.
Whether you can't figure out your waiting tiles, or want to know exactly how many points each draw is worth — calculate it all at once.

Easily look up effective tiles during a game, while reviewing a hand record, or during a post-game discussion with friends.

You can also check which meld would have been the best move.
Infinite auto-generated "best discard" quizzes let you study mahjong anywhere — even on your commute.

□ Premium Features
・All ads removed
・All features unlocked

□ Plans
・Lifetime plan: One-time purchase for permanent access to all features
・Monthly plan: Monthly subscription for full access (auto-renews every month)
※ See the in-app store screen for pricing details.

□ Restoring a Purchase
When switching devices, you can restore your previous purchase for free. (Settings => Restore Purchase) Make sure you are signed in with the same Apple ID used at the time of purchase.

□ Managing Your Subscription (Monthly plan only)
Go to the Settings app => Your Apple ID at the top => Subscriptions => Select "Mahjong Score Calc II". From this screen you can check your next renewal date and cancel or re-enable auto-renewal.

□ Auto-Renewal (Monthly plan only)
If you do not cancel auto-renewal at least 24 hours before the end of the current period, your subscription will automatically renew. The renewal charge is processed within 24 hours after the end of the current period.

□ Notes
・Purchases made within the app cannot be cancelled through any other method.
・Refunds for the current month are not available.
・Charges are processed through your Apple ID account.

□ Terms of Use
https://mahjongscore-90f16.web.app/en/terms.html

□ Privacy Policy
https://mahjongscore-90f16.web.app/en/privacy.html

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Plan (Yearly) | $24.99 | per year |
| プレミアムプラン | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 生涯プレミアム（セール） | $19.99 | one-time |
| 広告削除 | $10.99 | one-time |
| 永久会員権 | $34.99 | one-time |
| 一括検索機能を開放 | $3.99 | one-time |
| 生涯プレミアム（感謝版） | $11.99 | one-time |


## Recent user reviews (10 of 53)

All indexed reviews: https://appshunter.io/ios/app/riichi-mah-jong-helper/id1329138513/reviews.md

### 5/5 — 修正おねがいします！

*2026-07-20*

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！！

**Developer response:** 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🙇

### 1/5 — やりずらくなった

*2026-05-09*

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

### 1/5 — うわなんか課金制になった

*2026-04-29*

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

### 3/5 — なんとかしてくれ

*2024-11-19*

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

### 1/5 — 牌を押すと反応が悪い！

*2024-11-05*

すぐに解りたいのに完成図を作るのに5分かかる

### 1/5 — 点数計算でおかしいところがある

*2024-07-09*

ドラ表示牌含めて5個東があったり、基本符20を含めないで計算されたりところどころおかしいところがある

### 1/5 — バグが多い

*2024-06-23*

ドラでないものがドラで換算されていたり、問題で立直が表示されてないのに、解答では立直が加算されていたりと滅茶苦茶。

### 4/5 — 点数計算の練習にはよい

*2024-04-11*

ありがたく使わせてもらっています。
広告が邪魔というレビューに関しては、課金してくださいとしか思えない。
大して高くもないし、値段相応の価値はあります。

欲を言えば、実戦でなかなか出現しない牌姿が多い。
出現率をある程度設定できるのだが、なぜか両面待ちがほとんど出ないので、実戦で多出の平和が絡んだ点数計算の練習にはならない。
三色や一通、混一色、対々和も出てこない。
役の出現率を反映した設定にすることができれば、星5でした。

### 4/5 — 勉強に役立たせて頂いています

*2024-03-12, version 3.2.6*

問題量の豊富さと立直などの役の設定がよくできており、大変勉強になっております。ひとつお願いしたいこととしましては、練習問題の時に、役の数や名前だけでなく、どこがどのような符計算になるのかを書いていただけるとますます効率よく勉強になると思います。どうかご検討よろしくお願いいたします。

### 4/5 — ドラ

*2024-03-01*

計算モードでドラを選べれば嬉しいです。

## Frequently asked questions about Riichi Mah

### 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.

## Version history (last 5 releases)

### 4.23.0 — 2026-08-29

Fixed the discard practice.

• The hand was 13 tiles instead of 14
  You were asked which tile to discard from a hand that had not drawn yet.

• The drawn tile could not be selected
  When discarding the drawn tile was the best play, the right answer was missing from the choices.

• Resuming a paused question gave you a different question

### 4.22.0 — 2026-08-28

Learn scoring one step at a time.

• New: "New to Scoring? Start Here"
  Five steps — yaku, han, fu by element, total fu, then the score.
  Start from any step. (Premium)

• Score from yaku, without entering a hand
  Pick the yaku and fu, and get the score.

• The practice list, rebuilt
  Four categories, each showing what its questions look like with real tiles.

• Scoring questions now come from hands actually played by pros.

• Fixed the fu breakdown not adding up to the total fu.

• Fixed the screen getting stuck while an ad was loading.

• Fixed seven pairs showing up far too often.

### 4.21.0 — 2026-08-27

Choose how your tiles look.

• New: Tile Design
  Four sets — Classic, Indigo, Cat and Cat Noir. All 34 tiles drawn individually.
  (Indigo, Cat and Cat Noir require Premium.)

• A short intro on first launch
  It now shows all three calculators, so it's clear the app does more than scoring.

• Settings now shows whether you're subscribed to Premium.

• Redrew the Cat bamboo tiles to match traditional arrangements.

### 4.20.0 — 2026-08-25

Minor improvements

### 4.19.0 — 2026-08-14

Fixed minor bugs

## Apps similar to Riichi Mah

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hairi - Riichi Mahjong](https://appshunter.io/ios/app/hairi-riichi-mahjong/id1627992983) | 4.0 (1) | Free | Games |
| [Flull Flash 1000](https://appshunter.io/ios/app/flull-flash-1000/id1559676655) | 4.5 (2) | Free | Games |
| [麻雀ウザク式何切る？](https://appshunter.io/ios/app/id6474894627) | 5.0 (2) | Free | Games |
| [麻雀　一択何切る](https://appshunter.io/ios/app/id1177901943) | — | Free | Games |
| [麻雀点数計算 超 実践問題集](https://appshunter.io/ios/app/id1493166793) | — | Free | Games |
| [麻雀点数計算入門 Ver.3](https://appshunter.io/ios/app/ver3/id1465223052) | — | Free | Games |

## More apps by Kyohei Hakka

- [Reach Mahjong Score Manager](https://appshunter.io/ios/app/reach-mahjong-score-manager/id1279110013)
- [Robot Counter](https://appshunter.io/ios/app/robot-counter/id1280382532)
- [もじあそびで脳トレ - ひらがなならべ!!](https://appshunter.io/ios/app/id1349078859)
- [ダメージアシスタント for ポケカ](https://appshunter.io/ios/app/for/id1441901964)
- [Praisedone List: Todo & Habit](https://appshunter.io/ios/app/praisedone-list-todo-and-habit/id1509576622)

All apps by Kyohei Hakka: https://appshunter.io/developer/1279110012

## Related topics

[riichi city](https://appshunter.io/ios/topics/riichi-city)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*