# 清河日语 vs 21天突破高频词汇

The clearest difference is price: 清河日语 at Free against 21天突破高频词汇's $0.99. 清河日语 also leads on update cadence (every 3 days vs every 3 weeks) and device support (3 vs 1). 21天突破高频词汇's advantage is in-app purchases (none vs 3). On ads there is nothing between them.

清河日语 is free to download; 21天突破高频词汇 costs $0.99 up front. 清河日语 sells 3 in-app purchases, starting at $0.99 per month. 21天突破高频词汇 asks for nothing beyond the download.

清河日语 ships an update every 3 days, 21天突破高频词汇 every 3 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 清河日语 | 21天突破高频词汇 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Size | 99 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [其莲 蔡](https://appshunter.io/developer/1790768469) | [鲁扬 王](https://appshunter.io/developer/1890054449) |

## What reviewers say

### 清河日语

[App page](https://appshunter.io/ios/app/jlpt/id6751127236)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 年度会员 | $1.99 | per year |
| 永久会员 | $3.99 | one-time |


### 21天突破高频词汇

[App page](https://appshunter.io/ios/app/21/id6797169848)

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

**In-app purchases:** none


## Frequently asked questions

### Is 清河日语 free?

清河日语 is free to download, with in-app purchases available.

### Is 21天突破高频词汇 free?

21天突破高频词汇 costs $0.99, with no in-app purchases.

### Do 清河日语 or 21天突破高频词汇 have ads?

Neither 清河日语 nor 21天突破高频词汇 shows ads.

### Which is updated more often, 清河日语 or 21天突破高频词汇?

清河日语 ships an update every 3 days, and 21天突破高频词汇 every 3 weeks. Most recently, 清河日语 was updated on November 5, 2026 and 21天突破高频词汇 on November 6, 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.*