Riichi Compass vs MJ DB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Riichi Compass
This application helps manage scores and game progress for Riichi Mahjong. It offers features like score tracking, wind management, and a digital dice roller to enhance gameplay. Focus on playing the game without worrying about scorekeeping.
- Score management
- Quick score exchanges
- Real-time score difference display
- Electronic dice function
- Game history recording
- Wind and counter tracking
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This app supports score management for Riichi Mahjong. With convenient features such as quick score exchanges, real-time score difference displays, electronic dice function, and game history recording, manage scores, winds, and counters. Focus on the game.
MJ DB
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## Game Records - Record scores for each round: Real-time game trend charts - Detailed statistical analysis: Displays historical win rates and fan point distribution trends - Supports modifying/deleting past records, no fear of marking mistakes - Local Connection: Real-time sharing to other local devices, everyone can see - Displays modification and deletion logs for fairness and transparency ## Quick Start - Free, no intrusive ads - Completely offline, simple and easy to use - One-click to join previous players - Record scores with drag and drop of players - Handy tools: Seat shuffling, dice rolling, final settlement (supports grouping two people together for split payments) - Preset and customizable fan point tables, supports Jackpot gameplay ## UIUX - Traditional Chinese and English interface - Supports Dark Mode - Supports iPhone and iPad
Screenshots
Verdict
The clearest difference is in-app purchases: Riichi Compass at none against MJ DB's 1. Riichi Compass also leads on iOS requirement (15.1 vs 18.0). MJ DB's advantage is update cadence (every 2 days vs every 2 weeks). On price, ads 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. MJ DB sells 1 one-off in-app purchase. Riichi Compass asks for nothing beyond the download.
Riichi Compass ships an update every 2 weeks, MJ DB every 2 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Riichi Compass | MJ DB |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 35 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | 禹 梁 | wilson chung |
In-app purchases
Riichi Compass
No in-app purchases
MJ DB
- Remove Ads$0.99









