# 北控环境 vs 书单视频助手

The clearest difference is in-app purchases: 北控环境 at none against 书单视频助手's 4. 书单视频助手's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. 书单视频助手 sells 4 in-app purchases, starting at $4.99 per month. 北控环境 asks for nothing beyond the download.

## The numbers

| Metric | 北控环境 | 书单视频助手 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id6466374885/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 weeks |
| Size | 54 MB | 180 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [北京云隼科技有限公司](https://appshunter.io/developer/1696059823) | [苏州普合呈信息科技有限公司](https://appshunter.io/developer/1707288259) |

## What reviewers say

### 北控环境

[App page](https://appshunter.io/ios/app/id6464238596)

**In-app purchases:** none


### 书单视频助手

[App page](https://appshunter.io/ios/app/id6466374885)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $4.99 | per month |
| 月度VIP | $4.99 | one-time |
| 终身VIP | $12.99 | one-time |
| 年度VIP | $12.99 | one-time |


## Frequently asked questions

### Is 北控环境 free?

北控环境 is free to download, with no in-app purchases.

### Is 书单视频助手 free?

书单视频助手 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.*