# PDF转换器 vs 解压专家

The clearest difference is update cadence: 解压专家 at every 2 weeks against PDF转换器's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF转换器 sells 3 in-app purchases, starting at $2.99 per month and 解压专家 sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

PDF转换器 ships an update every 3 weeks, 解压专家 every 2 weeks. The most recent releases landed on September 28, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PDF转换器 | 解压专家 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 17 MB | 12 MB |
| Requires iOS | 12.4 | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Hongtai Trading Co., Ltd.](https://appshunter.io/developer/1634567281) | [双双 孙](https://appshunter.io/developer/1734637742) |

## What reviewers say

### PDF转换器

[App page](https://appshunter.io/ios/app/pdf-pdf/id6469493796)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF转换器-各种文档格式互转月会员 | $2.99 | per month |
| PDF转换器-各种文档格式互转年会员 | $24.99 | per year |
| PDF转换器-各种文档格式互转永久会员 | $39.99 | one-time |


### 解压专家

[App page](https://appshunter.io/ios/app/id6483253343)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 文件解压缩zip-支持多格式解压缩月会员 | $1.99 | per month |
| 文件解压缩zip-支持多格式解压缩年会员 | $14.99 | per year |
| 文件解压缩zip-支持多格式解压缩永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is PDF转换器 free?

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

### Is 解压专家 free?

解压专家 is free to download, with in-app purchases available.

### Do PDF转换器 or 解压专家 have ads?

Neither PDF转换器 nor 解压专家 shows ads.

### Which is updated more often, PDF转换器 or 解压专家?

PDF转换器 ships an update every 3 weeks, and 解压专家 every 2 weeks. Most recently, PDF转换器 was updated on September 28, 2026 and 解压专家 on October 10, 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.*