# RiichiDeck — Mahjong Clock & Tracker (3L)

> Mahjong Clock & Tracker (3L) (iPhone/iPad app by Shinya Fukumura.)

- Source: https://appshunter.io/ios/app/riichideck/id6811294795 (this page in markdown: same URL + `.md`)
- Developer: [Shinya Fukumura](https://appshunter.io/developer/6811294797)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 52 MB
- Languages: Japanese
- Released: 2026-09-16
- Data updated: 2026-10-10

## What is RiichiDeck?

RiichiDeck is an all-in-one companion app designed to streamline 4-Player Japanese Riichi Mahjong, covering score calculation assistance, match logging, mahjong timers, and tournament/league management powered by Web Viewer.

[Key Features]

* Intuitive Score Entry & Calculation Assistant
Quickly and accurately record final scores and tenbo transfers with fu/han input helpers and point declaration assistants.

* Mahjong Clock (Match Timer)
Equipped with remaining time warning sounds and vibration alerts to keep game pace smooth and on schedule.

* Tournament Management, Pairing PDF & Table QR Sync [NEW]
Simply scan the table QR code generated on the Web Viewer (browser) pairing PDF with your smartphone camera to automatically set up the table number, round, seated player names, and rule presets in one tap.

* Live Tournament Leaderboard & Visual Analytics (Web Viewer Sync)
Match results from each table are reflected on the tournament leaderboard in real-time (optimized for big-screen projectors). Easily share score trend charts and player performance stats via URL or image cards.

* Mahjong Glossary (All 38 Yaku & Rules Guide)
Search and reference all 38 Yaku conditions, han values, fu calculations, and essential mahjong terminology inside the app. Perfect for quick rule checks and beginner support.

* Match Memo for Each Hanchan
Record custom notes (up to 300 characters) such as Yakuman milestones, game reviews, or reflections on each match card.

* Full 5-Language Multilingual Support
The app interface, settings, and Web Viewer seamlessly support English, Japanese, Traditional Chinese, Simplified Chinese, and Korean. Ideal for international tournaments and global friendlies.

* No Registration Required & Privacy-Focused Design
All match data is stored safely on your device, ready to use immediately without any sign-up or login. When using tournament sync or Web Viewer sharing, data is securely relayed temporarily without requiring any user account.

* Note: Designed exclusively for 4-Player Japanese Riichi Mahjong (3-Player / Sanma is not supported).

[Terms of Use & Privacy Policy]
* Terms of Use (EULA / Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
* Service Terms: https://riichideck.com/terms.html
* Privacy Policy: https://riichideck.com/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| RiichiDeck Pro (Monthly) | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| RiichiDeck Pro (Lifetime) | $6.99 | one-time |


## Is RiichiDeck safe?

Not enough ratings yet to assess RiichiDeck.

## Is RiichiDeck legit?

RiichiDeck has limited verification signals. The AppsHunter Legitimacy Score for RiichiDeck is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.4.0 — 2026-10-04

[What's New in v1.4.0]
- Brand-New UI Design:
  Refreshed with a modern, eye-friendly "Deep Mocha & Biscuit Gold" theme for better readability and a sleek look during long match sessions.
- Official Mascot "Chunmaru":
  Meet Chunmaru, our friendly mascot guide across the dashboard and tutorials.
- Minor visual refinements and overall performance improvements.

### 1.3.9 — 2026-09-26

[What's New in v1.3.9]
- QR Scanner Improvements: Enhanced camera stability and performance when scanning tournament table QR codes.
- Minor bug fixes and overall performance optimizations.

### 1.3.3 — 2026-09-25

[What's New in v1.3.3]
- Enhanced Tournament Table QR Scanner: Easily scan table QR codes from the PDF pairing sheets generated on Web Viewer to automatically set up matches with registered player names and rules.

### 1.3.2 — 2026-09-23

- Added onboarding tutorial: Easily learn score tracking, roster QR import, mahjong timer, and Web Viewer sync (accessible anytime from the '?' icon).
- Added auto-detection for device system languages (English, Japanese, Traditional/Simplified Chinese, Korean).

### 1.3.1 — 2026-09-23

[What's New]
- Added "Match Memo" feature: Record custom notes (up to 300 characters) such as Yakuman, game reviews, or reflections for each Hanchan/round upon match completion, direct entry, or editing.
- Display match memos on game history cards.
- Data backup export and import (.riichi files & backup codes) are now free for all users.
- Expanded free tier saved tables limit up to 20 tables.

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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 2026-10-10.*