# 条形码查询 vs 投屏控制器

The clearest difference is price: 投屏控制器 at Free against 条形码查询's $1.99. 条形码查询's advantage is device support. On in-app purchases and iOS requirement there is nothing between them.

投屏控制器 is free to download; 条形码查询 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 条形码查询 | 投屏控制器 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Size | 3 MB | 1 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [西城 张](https://appshunter.io/developer/1506362248) | [Dajia Technology (Shenzhen) Co., Ltd.](https://appshunter.io/developer/1391476924) |

## What reviewers say

### 条形码查询

[App page](https://appshunter.io/ios/app/id1548238330)

**Features:** macOS Compatibility

**In-app purchases:** none


### 投屏控制器

[App page](https://appshunter.io/ios/app/id6489178174)

**In-app purchases:** none


## Frequently asked questions

### Is 条形码查询 free?

条形码查询 costs $1.99, with no in-app purchases.

### Is 投屏控制器 free?

投屏控制器 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.*