Mahjong Camera vs RiichiDeck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mahjong Camera
Effortlessly calculate Mahjong scores by scanning your winning hand. Supports multiple game variations and provides a waits calculator to identify all possible winning patterns. Save and share score tables easily.
- Scan winning hands for instant scoring
- Supports Riichi, Hong Kong, Taiwanese Mahjong
- Mahjong waits calculator
- Save and share score tables
- Record game scores
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• Calculate Han/Fu/Faan/Tai in seconds by scanning your winning hand • Supports multiple mahjong variations: Riichi Mahjong, Hong Kong Mahjong, Taiwanese Mahjong, and HK Style Taiwanese Mahjong • Mahjong waits calculator: Find out all wait patterns and never miss a chance again • Save Faan table as images or share via AirDrop and other methods (HK Style Taiwanese Mahjong) • Record mahjong game scores with ease
RiichiDeck
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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
Screenshots
Verdict
The clearest difference is ads: RiichiDeck at none against Mahjong Camera's shown. RiichiDeck also leads on update cadence (every 2 days vs every 6 weeks). Mahjong Camera's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Mahjong Camera sells 1 one-off in-app purchase and RiichiDeck sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Mahjong Camera ships an update every 6 weeks, RiichiDeck every 2 days. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.
| Parameter | Mahjong Camera | RiichiDeck |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 220 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Wing Hin Liu | Shinya Fukumura |
In-app purchases
Mahjong Camera
- Premium Lifetime Subscription$7.99
RiichiDeck
- RiichiDeck Pro (Monthly)$0.991 Month
- RiichiDeck Pro (Lifetime)$6.99







