# 注册安全工程师小牛题库 vs 注册安全工程师2025

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2025's 4. 注册安全工程师2025's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. 注册安全工程师2025 sells 4 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2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 7 months |
| Size | 52 MB | 43 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Kexue Technology Co., Ltd.](https://appshunter.io/developer/1556205586) | [科 杜](https://appshunter.io/developer/1805362270) |

## 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2025

[App page](https://appshunter.io/ios/app/2025/id6744795227)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 开通1个月VIP | $3.99 | one-time |
| 开通9个月VIP | $4.99 | one-time |
| 开通12个月VIP | $7.99 | one-time |
| 开通24个月VIP | $12.99 | 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2025 free?

注册安全工程师2025 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.*