# 注册安全工程师小牛题库 vs 注册安全工程师华云题库

The clearest difference is in-app purchases: 注册安全工程师小牛题库 at none against 注册安全工程师华云题库's 3. 注册安全工程师小牛题库 also leads on iOS requirement (13.0 vs 15.6). 注册安全工程师华云题库's advantage is device support. On price there is nothing between them.

Both are free to download. 注册安全工程师华云题库 sells 3 one-off in-app purchases. 注册安全工程师小牛题库 asks for nothing beyond the download.

## The numbers

| Metric | 注册安全工程师小牛题库 | 注册安全工程师华云题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Size | 52 MB | 48 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Kexue Technology Co., Ltd.](https://appshunter.io/developer/1556205586) | [Sichuan Palm Cloud Technology Co., Ltd.](https://appshunter.io/developer/983183897) |

## 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


### 注册安全工程师华云题库

[App page](https://appshunter.io/ios/app/2026/id6745993301)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 注安题库vip半年包 | $3.99 | one-time |
| 注安题库vip一年包 | $5.99 | one-time |
| 注安vip三年包 | $8.99 | one-time |


## 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 注册安全工程师华云题库 free?

注册安全工程师华云题库 is free to download, with in-app purchases available.

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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.*