# Riichi Calculator vs MJ DB

The clearest difference is price: MJ DB at Free against Riichi Calculator's $1.99. MJ DB also leads on update cadence (every 2 days vs every 3 months). Riichi Calculator's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads there is nothing between them.

MJ DB is free to download; Riichi Calculator costs $1.99 up front. MJ DB sells 1 one-off in-app purchase. Riichi Calculator asks for nothing beyond the download.

Riichi Calculator ships an update every 3 months, MJ DB every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Riichi Calculator | MJ DB |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/riichi-calculator/id6464372531/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 8 MB | 28 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cypress Applications](https://appshunter.io/developer/1471090979) | [wilson chung](https://appshunter.io/developer/564506285) |

## What reviewers say

### Riichi Calculator

[App page](https://appshunter.io/ios/app/riichi-calculator/id6464372531)

Easily calculate scores for Japanese Mahjong hands. This utility offers a user-friendly interface and supports multiple languages, providing a seamless scoring experience without any advertisements.

**Highlights:** Easy-to-use interface, Japanese Mahjong scoring, Multiple language support, No ads

**Features:** Vision Pro support

**In-app purchases:** none


### MJ DB

[App page](https://appshunter.io/ios/app/mj-db/id6759273739)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Riichi Calculator free?

Riichi Calculator costs $1.99, with no in-app purchases.

### Is MJ DB free?

MJ DB is free to download, with in-app purchases available.

### Do Riichi Calculator or MJ DB have ads?

Neither Riichi Calculator nor MJ DB shows ads.

### Which is updated more often, Riichi Calculator or MJ DB?

Riichi Calculator ships an update every 3 months, and MJ DB every 2 days. Most recently, Riichi Calculator was updated on November 3, 2026 and MJ DB on October 31, 2026.

---

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