# 注册安全工程师小牛题库 vs 安全知识培训

The clearest difference is device support: 安全知识培训 at 2 against 注册安全工程师小牛题库's —. 安全知识培训 also leads on iOS requirement (11 vs 13.0). 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 | 注册安全工程师小牛题库 | 安全知识培训 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Daily |
| Size | 52 MB | 15 MB |
| Requires iOS | 13.0 | **11** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Kexue Technology Co., Ltd.](https://appshunter.io/developer/1556205586) | [创联教育](https://appshunter.io/developer/859888722) |

## What reviewers say

### 注册安全工程师小牛题库

[App page](https://appshunter.io/ios/app/24/id6476246149)

**In-app purchases:** none


### 安全知识培训

[App page](https://appshunter.io/ios/app/id6480403897)

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

**In-app purchases:** none


## Frequently asked questions

### Is 注册安全工程师小牛题库 free?

注册安全工程师小牛题库 is free to download, with no in-app purchases.

### Is 安全知识培训 free?

安全知识培训 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.*