# 麻雀精算師 vs MJ DB

The clearest difference is update cadence: MJ DB at every 2 days against 麻雀精算師's monthly. 麻雀精算師's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 麻雀精算師 sells 1 one-off in-app purchase and MJ DB sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

麻雀精算師 ships an update monthly, MJ DB every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 麻雀精算師 | MJ DB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Size | 43 MB | 28 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kui Yan Marc YU](https://appshunter.io/developer/1843673863) | [wilson chung](https://appshunter.io/developer/564506285) |

## What reviewers say

### 麻雀精算師

[App page](https://appshunter.io/ios/app/id6757151657)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $4.99 | one-time |


### 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 麻雀精算師 free?

麻雀精算師 is free to download, with in-app purchases available.

### Is MJ DB free?

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

### Do 麻雀精算師 or MJ DB have ads?

Neither 麻雀精算師 nor MJ DB shows ads.

### Which is updated more often, 麻雀精算師 or MJ DB?

麻雀精算師 ships an update monthly, and MJ DB every 2 days. Most recently, 麻雀精算師 was updated on October 31, 2026 and MJ DB on October 31, 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.*