# 围棋九阳真经HD vs 妙音国学

The clearest difference is update cadence: 妙音国学 at every 3 weeks against 围棋九阳真经HD's every 3 months. 妙音国学 also leads on device support (3 vs 1). 围棋九阳真经HD's advantage is iOS requirement (9.0 vs 13.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 围棋九阳真经HD sells 2 one-off in-app purchases and 妙音国学 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

围棋九阳真经HD ships an update every 3 months, 妙音国学 every 3 weeks. The most recent releases landed on September 18, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | 围棋九阳真经HD | 妙音国学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 38 MB | 221 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [北京佳弈网络科技有限责任公司](https://appshunter.io/developer/1082185576) | [Beijing Miaoyin Digital Technology Co., Ltd](https://appshunter.io/developer/1258076007) |

## What reviewers say

### 围棋九阳真经HD

[App page](https://appshunter.io/ios/app/hd/id1103576966)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 订购六个月 | $19.99 | one-time |
| 订购两年 | $59.99 | one-time |


### 妙音国学

[App page](https://appshunter.io/ios/app/id1615332148)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 王羲之课 | $8.99 | one-time |
| 国画笔墨基础课（入门） | $11.99 | one-time |
| 多彩写意荷花精品课 | $13.99 | one-time |
| 宋代花鸟精品临摹课 | $13.99 | one-time |
| 乙瑛碑体系课 | $16.99 | one-time |
| 三坟记体系课 | $16.99 | one-time |
| 国画笔墨基础课（基础） | $19.99 | one-time |
| 国画笔墨基础课（进阶） | $19.99 | one-time |
| 花果入门精练课 | $23.99 | one-time |
| 春联创作课 | $59.99 | one-time |


## Frequently asked questions

### Is 围棋九阳真经HD free?

围棋九阳真经HD is free to download, with in-app purchases available.

### Is 妙音国学 free?

妙音国学 is free to download, with in-app purchases available.

### Do 围棋九阳真经HD or 妙音国学 have ads?

Neither 围棋九阳真经HD nor 妙音国学 shows ads.

### Which is updated more often, 围棋九阳真经HD or 妙音国学?

围棋九阳真经HD ships an update every 3 months, and 妙音国学 every 3 weeks. Most recently, 围棋九阳真经HD was updated on September 18, 2026 and 妙音国学 on August 17, 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.*