# 文档安全助手 vs 智维净化

The clearest difference is iOS requirement: 智维净化 at 9.0 against 文档安全助手's 12.0. On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 文档安全助手 | 智维净化 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Size | 21 MB | 55 MB |
| Requires iOS | 12.0 | **9.0** |
| Age rating | 4+ | 17+ |
| Developer | [FRONTIER TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1133064912) | [北京万维盈创科技有限公司](https://appshunter.io/developer/1680456251) |

## What reviewers say

### 文档安全助手

[App page](https://appshunter.io/ios/app/id1367306094)

**In-app purchases:** none


### 智维净化

[App page](https://appshunter.io/ios/app/id6448864610)

**In-app purchases:** none


## Frequently asked questions

### Is 文档安全助手 free?

文档安全助手 is free to download, with no in-app purchases.

### Is 智维净化 free?

智维净化 is free to download, with no in-app purchases.

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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.*