# 脑筋急转弯3000问 vs 妙音国学

The clearest difference is in-app purchases: 脑筋急转弯3000问 at none against 妙音国学's 10. 妙音国学's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 71 months). On price and device support there is nothing between them.

Both are free to download. 妙音国学 sells 10 one-off in-app purchases. 脑筋急转弯3000问 asks for nothing beyond the download.

脑筋急转弯3000问 ships an update every 71 months, 妙音国学 every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 脑筋急转弯3000问 | 妙音国学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 71 months | **Every 3 weeks** |
| Size | 6 MB | 221 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [正峰 裴](https://appshunter.io/developer/1437867699) | [Beijing Miaoyin Digital Technology Co., Ltd](https://appshunter.io/developer/1258076007) |

## What reviewers say

### 脑筋急转弯3000问

[App page](https://appshunter.io/ios/app/3000/id1525086381)

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

**In-app purchases:** none


### 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 脑筋急转弯3000问 free?

脑筋急转弯3000问 is free to download, with no in-app purchases.

### Is 妙音国学 free?

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

### Do 脑筋急转弯3000问 or 妙音国学 have ads?

脑筋急转弯3000问 shows ads; 妙音国学 does not.

### Which is updated more often, 脑筋急转弯3000问 or 妙音国学?

脑筋急转弯3000问 ships an update every 71 months, and 妙音国学 every 3 weeks. Most recently, 脑筋急转弯3000问 was updated on November 3, 2026 and 妙音国学 on November 3, 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.*