# 扫描大师 vs PDF转换器

The clearest difference is update cadence: PDF转换器 at every 3 days against 扫描大师's every 3 weeks. 扫描大师's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 扫描大师 sells 3 in-app purchases, starting at $2.99 per month and PDF转换器 sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

扫描大师 ships an update every 3 weeks, PDF转换器 every 3 days. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | 扫描大师 | PDF转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 48 MB | 8 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [坪 王](https://appshunter.io/developer/1658473455) | [Ming Fai Lee](https://appshunter.io/developer/1691484255) |

## What reviewers say

### 扫描大师

[App page](https://appshunter.io/ios/app/and/id6447673449)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全能扫描仪月会员 | $2.99 | per month |
| 全能扫描仪年会员 | $19.99 | per year |
| 全能扫描仪永久会员 | $39.99 | one-time |


### PDF转换器

[App page](https://appshunter.io/ios/app/pdf-pdf/id6755513544)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF转换器周会员 | $2.99 | per 7 days |
| PDF转换器年会员 | $24.99 | per year |


## Frequently asked questions

### Is 扫描大师 free?

扫描大师 is free to download, with in-app purchases available.

### Is PDF转换器 free?

PDF转换器 is free to download, with in-app purchases available.

### Do 扫描大师 or PDF转换器 have ads?

Neither 扫描大师 nor PDF转换器 shows ads.

### Which is updated more often, 扫描大师 or PDF转换器?

扫描大师 ships an update every 3 weeks, and PDF转换器 every 3 days. Most recently, 扫描大师 was updated on September 24, 2026 and PDF转换器 on September 16, 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.*