# 解压大师 vs PDF转换器

The clearest difference is iOS requirement: 解压大师 at 12.0 against PDF转换器's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 解压大师 sells 3 in-app purchases, starting at $1.99 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.

解压大师 ships an update every 2 days, PDF转换器 every 3 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 解压大师 | PDF转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 37 MB | 8 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kit Ping Lui](https://appshunter.io/developer/1684107400) | [Ming Fai Lee](https://appshunter.io/developer/1691484255) |

## What reviewers say

### 解压大师

[App page](https://appshunter.io/ios/app/id6448230887)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全能解压专家-多格式解压缩月订阅 | $1.99 | per month |
| 全能解压专家-多格式解压缩年订阅 | $19.99 | per year |
| 全能解压专家-多格式解压缩终身订阅 | $29.99 | 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 解压大师 free?

解压大师 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 解压大师 or PDF转换器 have ads?

Neither 解压大师 nor PDF转换器 shows ads.

### Which is updated more often, 解压大师 or PDF转换器?

解压大师 ships an update every 2 days, and PDF转换器 every 3 days. Most recently, 解压大师 was updated on November 7, 2026 and PDF转换器 on November 9, 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.*