# PDF Master vs pdf转换器

The clearest difference is update cadence: pdf转换器 at every 4 weeks against PDF Master's every 15 months. pdf转换器 also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Master sells 6 in-app purchases, starting at $0.99 per 7 days and pdf转换器 sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Master ships an update every 15 months, pdf转换器 every 4 weeks. The most recent releases landed on May 17, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PDF Master | pdf转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 weeks** |
| Size | 8 MB | 20 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [程 张](https://appshunter.io/developer/1523996955) | [文 罗](https://appshunter.io/developer/1709424450) |

## What reviewers say

### PDF Master

[App page](https://appshunter.io/ios/app/pdf-master-reader-and-converter/id1645087890)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF转换器Pro周VIP | $0.99 | per 7 days |
| PDF转换器Pro月会员 | $3.99 | per month |
| Weekly PDF Premium | $7.99 | per 7 days |
| PDF转换器Pro年会员 | $12.99 | per year |
| Monthly PDF Premium | $12.99 | per month |
| Annual PDF Premium | $29.99 | per year |


### pdf转换器

[App page](https://appshunter.io/ios/app/pdf/id6472162112)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $4.99 | per 7 days |
| 月会员 | $12.99 | per month |


## Frequently asked questions

### Is PDF Master free?

PDF Master 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 PDF Master or pdf转换器 have ads?

Neither PDF Master nor pdf转换器 shows ads.

### Which is updated more often, PDF Master or pdf转换器?

PDF Master ships an update every 15 months, and pdf转换器 every 4 weeks. Most recently, PDF Master was updated on May 17, 2026 and pdf转换器 on September 22, 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.*