# Mahjong Book: Learn Riichi — Learn, Score & Play Online > Learn, score, and play Japanese riichi mahjong with AI and online multiplayer. (iPhone/iPad app by CLEAR EDITION, K.K..) - Source: https://appshunter.io/ios/app/mahjong-book-learn-riichi/id6799940483 (this page in markdown: same URL + `.md`) - Developer: [CLEAR EDITION, K.K.](https://appshunter.io/developer/6799940485) - Category: Games, Education, Board - Price: $0.99 - Age rating: 4+ - Requires: iOS 15.0 · 158 MB - Languages: American English, Japanese - Released: 2026-08-15 - Data updated: 2026-09-20 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/mahjong-book-learn-riichi/id6799940483/reviews.md ## What is Mahjong Book? Mahjong Book brings learning, scoring and playing Japanese riichi mahjong together. LEARN THE TILES Explore tile types, winning shapes, waits, yaku, dora, fu and scoring through tile-based lessons and quizzes. Spaced repetition helps you review. Look up a yaku or unfamiliar term in the built-in references. EXPLORE TILE EFFICIENCY Chapter VII covers shanten, ukeire, visible tiles and lookahead. The on-device lab compares every discard in a closed 14-tile hand over your next two draws. Generate exercises or enter your own tiles. It compares a stated structural target, not real-game win rates, value or defense. ENJOY THE MUSIC Listen to all 19 bundled tracks in the Music Library, with seeking, repeat and shuffle. No streaming connection is needed. PUT IT INTO PLAY Play 4-player or 3-player mahjong on a 3D table against beginner, intermediate or advanced AI. Tap a tile to select it, then tap it again to discard. Practise what you learn, one decision at a time. UNDERSTAND THE SCORE In Scoring Training, winning hands from AI matches become fu and scoring questions. See the explanation whether your answer is right or wrong. The hand payment, honba bonuses and riichi deposits are shown separately, so you can follow how the final total is formed. PLAY WITH FRIENDS OR THE WORLD Join a worldwide table or create a private room with a 4-digit code. Worldwide tables fill empty seats with AI two minutes after recruitment starts. Chat is limited to preset phrases shared within the same room; there is no free-text chat. Online play requires an internet connection. SWITCH THE APP TO ENGLISH The in-app language button lets you switch between English and Japanese at any time. Lessons and AI matches work offline. One-time purchase. No ads, no in-app purchases and no gambling. --- 日本語 --- 「麻雀の書」は、牌・役・符計算を学ぶ講座とクイズ、四人打ち・三人打ちの3D対局を一つにしたリーチ麻雀アプリです。初級・中級・上級AIとのオフライン対局、世界対戦、4桁コードで集まるプライベート対戦に対応。符計算修行では、手牌の点数と本場・供託を分けて解説します。 アプリ内の言語ボタンで日本語／Englishを切り替えられます。オンライン機能にはインターネット接続が必要です。広告なし・追加課金なし・賭博要素なし。 ## Key features - Tile-based lessons and quizzes - Spaced repetition for review - 3D AI opponents (4 or 3 player) - Scoring training with explanations - Online multiplayer with private rooms - Offline play for lessons and AI matches - English and Japanese language support ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/mahjong-book-learn-riichi/id6799940483/reviews.md ### 5/5 — 符計算を覚えるならこれ！ *2026-09-16* AIとの対局を楽しみながら符計算を覚えられるのがすごくいいです。実際の手牌で確認できるので、自然と符の考え方が身につきます。麻雀は打てるけど符計算は苦手、という人におすすめ。 ### 5/5 — 符計算 *2026-08-29* AIとの対戦で符計算覚えられるシステムはいい。他にないシステム。音楽もいい。ビジュアルと操作感は改善していって欲しい。 ## Frequently asked questions about Mahjong Book ### What is Mahjong Book? Mahjong Book is a paid application designed to help users learn, score, and play Japanese riichi mahjong. It offers interactive lessons, AI opponents for practice, and online multiplayer functionality. The app was last updated on September 9, 2026. ### Does Mahjong Book have ads? No, Mahjong Book is completely ad-free. The developer explicitly states 'No ads, no in-app purchases and no gambling' in the app description. This ensures an uninterrupted learning and playing experience. ### Can I play Mahjong Book offline? Yes, Mahjong Book supports offline play for its lessons and AI matches. This allows you to practice and learn the game mechanics even without an internet connection. ### What devices does Mahjong Book support? Mahjong Book is available for iPhone and iPod devices. It is rated for ages 4 and up, making it suitable for a wide range of users. ### How does the scoring training work in Mahjong Book? The scoring training feature presents winning hands from AI matches and asks you to calculate the fu and score. It provides explanations for correct and incorrect answers, detailing hand payments, honba bonuses, and riichi deposits separately. ### Can I play Mahjong Book with friends? Yes, you can play with friends by creating a private room using a 4-digit code. For worldwide play, you can join a global table, which will fill empty seats with AI after two minutes if human players are not found. ### What is the price of Mahjong Book? Mahjong Book is a one-time purchase priced at $0.99. There are no additional in-app purchases or subscription fees required to access all features. ### How often is Mahjong Book updated? The app was last updated on September 9, 2026, with version 2.0. This indicates a recent update, suggesting ongoing support and potential for future improvements. ## Version history (last 5 releases) ### 2.5 — 2026-09-15 Version 2.5 adds Chapter VII: Tile Efficiency and a Music Library. • Four lessons on shanten, ukeire, visible tiles and lookahead • A local lab comparing every discard over your next two draws • Generated exercises and custom hand / visible-tile input • A unified interface across Study, Play, Collection, Yaku and Glossary • Offline Play now appears above Online Play • Listen to all 19 bundled tracks, with seeking, repeat and shuffle The lab compares a stated tile set, target and two-draw model. It does not estimate real-game win rates, value or defense. --- 日本語 --- 2.5では、第7章「牌効率」とミュージックプレイヤーを追加しました。 ・向聴数、受け入れ、見えている牌、先読みを学ぶ4課を追加 ・全打牌候補と自分の2ツモ先を、端末内で計算して比較する演習 ・新しい練習手の生成、自分の牌姿と見えている牌の入力に対応 ・修練・対局・名鑑・役典・用語のデザインを統一 ・オフライン対戦の入口をオンライン対戦より上へ移動 ・全19曲を聴ける音楽の書架。曲送り、再生位置、リピート、シャッフルに対応 牌効率演習は、指定した牌構成・目標・2ツモという条件での比較です。実戦の和了率・勝率、打点や守備を評価するものではありません。 ### 2.0 — 2026-09-09 Version 2.0 brings learning and play closer together. • A shared 3D table for offline and online matches • Clearer discards, calls, riichi and winning-hand presentation • Per-seat North-dora counts in 3-player matches • Step-by-step explanations of fu, hand payment, honba and riichi deposits • Improved online reconnection, AI substitution and turn handling • Fixes for tile-count consistency, match progression and Japanese/English text --- 日本語 --- 2.0では対局を共通の3D卓に刷新。打牌・鳴き・和了の演出、抜きドラ数の表示、符と点数の段階的な解説、オンライン復帰と対局進行を改善しました。 ### 1.1.2 — 2026-08-28 • Fixed an issue that could stop a match after calling a tile. • Improved tile rendering and battle-screen stability. • Fixed unwanted selection menus appearing after a long press. • Fixed the Home Screen app name shown on Japanese devices. • Added notifications when a new app version is available. ### 1.1.1 — 2026-08-28 • Renamed the app to Mahjong Book • Added worldwide matches and private rooms with any 4-digit code • Added preset chat, reconnect support and a visible turn timer • Improved online match recovery, tile display and input stability ### 1.0.1 — 2026-08-15 No release notes. --- *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 2026-09-20.*