# 安规真题库 vs 电力换算

The clearest difference is in-app purchases: 电力换算 at none against 安规真题库's 3. 电力换算 also leads on device support. 安规真题库's advantage is iOS requirement (13.0 vs 15.6). On price there is nothing between them.

Both are free to download. 安规真题库 sells 3 one-off in-app purchases. 电力换算 asks for nothing beyond the download.

## The numbers

| Metric | 安规真题库 | 电力换算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | Yes |
| Size | 64 MB | 15 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [zhangpeng](https://appshunter.io/developer/1736067310) | [Shenzhen Duoxiang Technology Co., Ltd](https://appshunter.io/developer/1534573413) |

## What reviewers say

### 安规真题库

[App page](https://appshunter.io/ios/app/id6480512077)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月卡 | $2.99 | one-time |
| 季卡 | $2.99 | one-time |
| 年卡 | $3.99 | one-time |


### 电力换算

[App page](https://appshunter.io/ios/app/id6745462224)

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

**In-app purchases:** none


## Frequently asked questions

### Is 安规真题库 free?

安规真题库 is free to download, with in-app purchases available.

### Is 电力换算 free?

电力换算 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.*