# 围棋快乐背定式HD vs 妙音少儿国学

The clearest difference is update cadence: 围棋快乐背定式HD at every 2 months against 妙音少儿国学's every 5 months. 围棋快乐背定式HD also leads on iOS requirement (9.0 vs 13.0). 妙音少儿国学's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 围棋快乐背定式HD sells 3 one-off in-app purchases and 妙音少儿国学 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

围棋快乐背定式HD ships an update every 2 months, 妙音少儿国学 every 5 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 围棋快乐背定式HD | 妙音少儿国学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 94 MB | 44 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

### 围棋快乐背定式HD

[App page](https://appshunter.io/ios/app/hd/id1103576005)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 订购一个月 | $5.99 | one-time |
| 订购六个月 | $14.99 | one-time |
| 订购一年 | $25.99 | one-time |


### 妙音少儿国学

[App page](https://appshunter.io/ios/app/id6739520856)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 古诗学堂 | $9.99 | one-time |
| 弟子规 | $14.99 | one-time |
| 每日一句学经典 | $24.99 | one-time |
| 成语+世说新语 | $29.99 | one-time |
| 围棋系列课 | $29.99 | one-time |
| 围棋+世说新语 | $39.99 | one-time |
| 围棋+成语 | $39.99 | one-time |
| 世说新语+成语 | $39.99 | one-time |
| 围棋+成语+世说新语（补差价） | $49.99 | one-time |
| 围棋+世说新语+成语 | $59.99 | one-time |


## Frequently asked questions

### Is 围棋快乐背定式HD free?

围棋快乐背定式HD is free to download, with in-app purchases available.

### Is 妙音少儿国学 free?

妙音少儿国学 is free to download, with in-app purchases available.

### Do 围棋快乐背定式HD or 妙音少儿国学 have ads?

Neither 围棋快乐背定式HD nor 妙音少儿国学 shows ads.

### Which is updated more often, 围棋快乐背定式HD or 妙音少儿国学?

围棋快乐背定式HD ships an update every 2 months, and 妙音少儿国学 every 5 months. Most recently, 围棋快乐背定式HD was updated on September 18, 2026 and 妙音少儿国学 on September 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.*