# 解压专家 vs PDF Shrink

The clearest difference is in-app purchases: PDF Shrink at none against 解压专家's 3. 解压专家's advantage is device support (3 vs 1) and iOS requirement (12.4 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. 解压专家 sells 3 in-app purchases, starting at $1.99 per month. PDF Shrink asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 解压专家 | PDF Shrink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 12 MB | 1 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [双双 孙](https://appshunter.io/developer/1734637742) | [宏华 胡](https://appshunter.io/developer/1868280133) |

## What reviewers say

### 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 |


### PDF Shrink

[App page](https://appshunter.io/ios/app/pdf-shrink-offline-compress/id6782493416)

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

**In-app purchases:** none


## Frequently asked questions

### Is 解压专家 free?

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

### Is PDF Shrink free?

PDF Shrink is free to download, with no in-app purchases.

### Do 解压专家 or PDF Shrink have ads?

Neither 解压专家 nor PDF Shrink shows ads.

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

解压专家 ships an update every 2 weeks, and PDF Shrink every 2 weeks. Most recently, 解压专家 was updated on November 4, 2026 and PDF Shrink 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.*