# JongBook vs MahjongDiary

The clearest difference is update cadence: JongBook at every 6 days against MahjongDiary's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. JongBook sells 2 in-app purchases, starting at $6.49 per month and MahjongDiary sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

JongBook ships an update every 6 days, MahjongDiary every 2 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | JongBook | MahjongDiary |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 26 MB |
| Requires iOS | **17.4** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [ryo yoshitsugu](https://appshunter.io/developer/1614987662) | [Daichi Itokazu](https://appshunter.io/developer/1781440822) |

## What reviewers say

### JongBook

[App page](https://appshunter.io/ios/app/jongbook-mahjong-score-sheet/id6572305406)

Effortlessly track Riichi mahjong scores and player statistics. This app eliminates the need for paper and calculators, automatically calculating net results and offering detailed insights into game history and player performance. Manage groups, share results, and enjoy deeper analysis with optional Pro features.

**Highlights:** Automatic score calculation, Supports 3 and 4-player mahjong, Player group management, Shareable score sheets, Detailed player statistics, Export results as image

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JongBook Pro (Monthly) | $6.49 | per month |
| JongBook Pro (Yearly) | $50.99 | per year |


### MahjongDiary

[App page](https://appshunter.io/ios/app/mahjongdiary/id6741926344)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $0.99 | per month |


## Frequently asked questions

### Is JongBook free?

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

### Is MahjongDiary free?

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

### Do JongBook or MahjongDiary have ads?

Both JongBook and MahjongDiary show ads.

### Which is updated more often, JongBook or MahjongDiary?

JongBook ships an update every 6 days, and MahjongDiary every 2 weeks. Most recently, JongBook was updated on October 27, 2026 and MahjongDiary on October 28, 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.*