# Riichi Compass vs 13 Orphans Calculator

The clearest difference is in-app purchases: Riichi Compass at none against 13 Orphans Calculator's 1. Riichi Compass also leads on ads (none vs shown) and device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. 13 Orphans Calculator sells 1 one-off in-app purchase. Riichi Compass asks for nothing beyond the download.

Riichi Compass ships an update every 2 weeks, 13 Orphans Calculator every 9 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Riichi Compass | 13 Orphans Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/riichi-compass/id6757171107/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 35 MB | 45 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [禹 梁](https://appshunter.io/developer/1864648892) | [KEVIN ALLEN GONZALES ONG](https://appshunter.io/developer/6801997158) |

## What reviewers say

### Riichi Compass

[App page](https://appshunter.io/ios/app/riichi-compass/id6757171107)

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.

**Highlights:** Score management, Quick score exchanges, Real-time score difference display, Electronic dice function, Game history recording, Wind and counter tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### 13 Orphans Calculator

[App page](https://appshunter.io/ios/app/13-orphans-calculator/id6801997156)

**In-app purchases (1)**

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


## Frequently asked questions

### Is Riichi Compass free?

Riichi Compass is free to download, with no in-app purchases.

### Is 13 Orphans Calculator free?

13 Orphans Calculator is free to download, with in-app purchases available.

### Do Riichi Compass or 13 Orphans Calculator have ads?

13 Orphans Calculator shows ads; Riichi Compass does not.

### Which is updated more often, Riichi Compass or 13 Orphans Calculator?

Riichi Compass ships an update every 2 weeks, and 13 Orphans Calculator every 9 days. Most recently, Riichi Compass was updated on October 31, 2026 and 13 Orphans Calculator on November 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*