# 安规题库 vs 珞研知盐

The clearest difference is in-app purchases: 珞研知盐 at none against 安规题库's 3. 珞研知盐 also leads on iOS requirement (11.0 vs 13.0). 安规题库's advantage is device support. On price there is nothing between them.

Both are free to download. 安规题库 sells 3 one-off in-app purchases. 珞研知盐 asks for nothing beyond the download.

## The numbers

| Metric | 安规题库 | 珞研知盐 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 35 months | — |
| Size | 16 MB | 58 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Qianhaitiantian Financial Investment Service Co., Ltd.](https://appshunter.io/developer/1255477419) | [Xiangyang Zhiyan Education Technology Co., Ltd.](https://appshunter.io/developer/1712887973) |

## What reviewers say

### 安规题库

[App page](https://appshunter.io/ios/app/2021/id1580656183)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP10个月 | $1.99 | one-time |
| VIP22个月 | $2.99 | one-time |
| VIP34个月 | $3.99 | one-time |


### 珞研知盐

[App page](https://appshunter.io/ios/app/id6470039027)

**In-app purchases:** none


## Frequently asked questions

### Is 安规题库 free?

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

### Is 珞研知盐 free?

珞研知盐 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.*