# USB扩展屏 vs booksandcomicstools

The clearest difference is in-app purchases: booksandcomicstools at none against USB扩展屏's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. USB扩展屏 sells 1 one-off in-app purchase. booksandcomicstools asks for nothing beyond the download.

## The numbers

| Metric | USB扩展屏 | booksandcomicstools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 0 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [晓满 李](https://appshunter.io/developer/1515867430) | [碧云 钱](https://appshunter.io/developer/961420620) |

## What reviewers say

### USB扩展屏

[App page](https://appshunter.io/ios/app/usb/id6502822709)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整版 | $0.99 | one-time |


### booksandcomicstools

[App page](https://appshunter.io/ios/app/booksandcomicstools/id6769264385)

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

**In-app purchases:** none


## Frequently asked questions

### Is USB扩展屏 free?

USB扩展屏 is free to download, with in-app purchases available.

### Is booksandcomicstools free?

booksandcomicstools is free to download, with no in-app purchases.

### Do USB扩展屏 or booksandcomicstools have ads?

Neither USB扩展屏 nor booksandcomicstools shows ads.

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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.*