Supported Features
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Dark Interface
Riichi Mahjong Pocket
Fu, Score & Yaku Calculator
Only for iPhone
Free · In‑App Purchases
iPhone
Count fu, check scores and yaku, and settle games using score differences and uma. No ads; core features work offline. Pro adds score input, history, and stats.
Riichi Mahjong Pocket is a pocket-sized helper for Japanese riichi mahjong. Open it mid-game to count fu, work out the score, settle the game, or look up a yaku.
It's handy for quick checks during play and for brushing up on the rules, helping beginners learn and supporting intermediate players at the table.
No ads, no sign-up. Core features — fu and score calculation, settlement, and the yaku list — work offline. (Online access is used mainly for in-app purchase checks, purchase processing, and app updates.)
◆ Free features
• Fu & score calculation: tap or drag tiles to count fu and calculate the score
• Score table: quickly look up scores by fu and han
• Yaku list: search by name, keyword, han, or closed/open status (local yaku included)
• Settlement: enter the score difference from the starting points to calculate the winner's final points
• Memo: jot down house rules and anything else
• Rulebook: a beginner-friendly guide to the basics (includes a dice/seat quick reference)
◆ Pro (one-time purchase)
• Score input mode: enter the four players' final scores to auto-calculate ranking, uma, and settlement
• Settlement history: save, edit, and revisit your results (with export, import, and sharing)
• Lifetime stats: automatic per-player totals, with charts for rank distribution, cumulative points, and yakuman history
• Yakuman tracker: record each player's yakuman for each game
• Game memo: leave notes and highlights on each game
Pro is a one-time purchase (no monthly or yearly auto-renewing subscriptions).
* Pro is valid only for purchases made on the App Store and can't be transferred to versions on other platforms.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New
• The full app, including the rulebook, is now available in English.
• Lifetime Stats (Pro) now includes charts for rank distribution, cumulative points, and yakuman history.
The developer, LITTLE FOREST, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- LITTLE FOREST
- Size
- 73.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 開発者を応援 (大) $5.99
- 開発者を応援 (小) $0.99
- Pro (買い切り) $2.99
- Copyright
- © 2026 Little Forest