# 学习成长21天 vs 北京音协考级

The clearest difference is update cadence: 学习成长21天 at weekly against 北京音协考级's every 6 weeks. 学习成长21天 also leads on iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

学习成长21天 ships an update weekly, 北京音协考级 every 6 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 学习成长21天 | 北京音协考级 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 66 MB | 55 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong Youyixue Education Technology Co., Ltd.](https://appshunter.io/developer/1508981243) | [Shenzhen Zego Technology Co., Ltd.](https://appshunter.io/developer/1228084235) |

## What reviewers say

### 学习成长21天

[App page](https://appshunter.io/ios/app/21/id1518769944)

**In-app purchases:** none


### 北京音协考级

[App page](https://appshunter.io/ios/app/id1633227893)

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

**In-app purchases:** none


## Frequently asked questions

### Is 学习成长21天 free?

学习成长21天 is free to download, with no in-app purchases.

### Is 北京音协考级 free?

北京音协考级 is free to download, with no in-app purchases.

### Do 学习成长21天 or 北京音协考级 have ads?

Neither 学习成长21天 nor 北京音协考级 shows ads.

### Which is updated more often, 学习成长21天 or 北京音协考级?

学习成长21天 ships an update weekly, and 北京音协考级 every 6 weeks. Most recently, 学习成长21天 was updated on October 25, 2026 and 北京音协考级 on October 24, 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.*