# 呆呆背多分 vs 單字知識王

The clearest difference is review sentiment: 呆呆背多分 at 98% against 單字知識王's 56%. 呆呆背多分 also leads on iOS requirement (9.0 vs 14.0). 單字知識王's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 呆呆背多分 sells 3 one-off in-app purchases. 單字知識王 asks for nothing beyond the download.

呆呆背多分 ships an update every 6 weeks, 單字知識王 weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 呆呆背多分 | 單字知識王 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6466239865/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **98.2% of reviews** | 55.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 141 MB | 548 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LI-SHENG TECHNOLOGY CO., LTD.](https://appshunter.io/developer/541510701) | [CMoney](https://appshunter.io/developer/503431064) |

## What reviewers say

### 呆呆背多分

[App page](https://appshunter.io/ios/app/id1315548605)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 升高中字庫 | $0.99 | one-time |
| 考大學字庫 | $1.99 | one-time |
| 拼就業字庫 | $2.99 | one-time |


### 單字知識王

[App page](https://appshunter.io/ios/app/id6466239865)

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

**In-app purchases:** none


## Frequently asked questions

### Is 呆呆背多分 free?

呆呆背多分 is free to download, with in-app purchases available.

### Is 單字知識王 free?

單字知識王 is free to download, with no in-app purchases.

### Do 呆呆背多分 or 單字知識王 have ads?

Neither 呆呆背多分 nor 單字知識王 shows ads.

### Which is updated more often, 呆呆背多分 or 單字知識王?

呆呆背多分 ships an update every 6 weeks, and 單字知識王 weekly. Most recently, 呆呆背多分 was updated on October 24, 2026 and 單字知識王 on October 25, 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.*