# 13 Orphans Calculator — Mahjong Scoring and Tracker

> Mahjong Scoring and Tracker (iPhone/iPad app by KEVIN ALLEN GONZALES ONG.)

- Source: https://appshunter.io/ios/app/13-orphans-calculator/id6801997156 (this page in markdown: same URL + `.md`)
- Developer: [KEVIN ALLEN GONZALES ONG](https://appshunter.io/developer/6801997158)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 42 MB
- Languages: American English
- Released: 2026-09-10
- Data updated: 2026-10-01

## What is 13 Orphans Calculator?

13 Orphans Calculator helps you score Mahjong hands and keep games moving at the table.

Score hands across Riichi, MCR / Chinese Official, Hong Kong, and Taiwanese Mahjong, with support for custom rule profiles.

Build your completed hand, enter the relevant scoring details, and review the result with clear point and payment information. Game tracking tools help tables record wins, draws, rounds, dealer changes, and score movement without needing an account.

Designed for real Mahjong tables, 13 Orphans Calculator keeps the scoring process organized so you can spend less time calculating and more time playing.

Features include:
• Riichi Mahjong scoring
• MCR / Chinese Official scoring
• Hong Kong Mahjong scoring
• Taiwanese Mahjong scoring
• Custom rule profiles
• Hand building and score calculation
• Game and score tracking
• Local-first play with no account required

Optional Pro features are available through a one-time lifetime unlock.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 13 Orphans Pro Lifetime | $4.99 | one-time |


## Is 13 Orphans Calculator safe?

Not enough ratings yet to assess 13 Orphans Calculator.

## Is 13 Orphans Calculator legit?

13 Orphans Calculator has limited verification signals. The AppsHunter Legitimacy Score for 13 Orphans Calculator is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.2 — 2026-09-25

Improved the calculator guides and game tracking experience.

Fixed Hong Kong guide examples so tile combinations display correctly.
Fixed a Taiwanese Live Table issue where the page could remain scrolled to the bottom after switching from Edit Setup.
Improved page switching behavior in Custom Track a Game.
Clarified the Riichi Yaku guide, including the requirement to have at least one Yaku to win.

Also includes minor stability and usability improvements.

### 1.0.1 — 2026-09-16

What’s New in 1.0.1
• Improved Mahjong tile reference guides with numbered tile illustrations
• Added Flowers and Seasons references for MCR, Hong Kong, and Taiwanese Mahjong
• Expanded Hong Kong Mahjong scoring with additional winning patterns
• Improved guide layouts and usability
• Minor fixes and refinements

### 1.0 — 2026-09-10

No release notes.

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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 2026-10-01.*