# 全车里程通 vs USB扩展屏

The clearest difference is in-app purchases: 全车里程通 at none against USB扩展屏's 1. 全车里程通 also leads on iOS requirement (15.5 vs 17.0). USB扩展屏's advantage is update cadence (daily vs every 5 months). On price, ads and device support there is nothing between them.

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

全车里程通 ships an update every 5 months, USB扩展屏 daily. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 全车里程通 | USB扩展屏 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Size | 63 MB | 0 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [合肥佩冠电子科技有限公司](https://appshunter.io/developer/1637900173) | [晓满 李](https://appshunter.io/developer/1515867430) |

## What reviewers say

### 全车里程通

[App page](https://appshunter.io/ios/app/id6476832532)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 全车里程通 free?

全车里程通 is free to download, with no in-app purchases.

### Is USB扩展屏 free?

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

### Do 全车里程通 or USB扩展屏 have ads?

Neither 全车里程通 nor USB扩展屏 shows ads.

### Which is updated more often, 全车里程通 or USB扩展屏?

全车里程通 ships an update every 5 months, and USB扩展屏 daily. Most recently, 全车里程通 was updated on September 24, 2026 and USB扩展屏 on October 1, 2026.

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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.*