# USB vs WirelessUSG Flash

The clearest difference is rating: WirelessUSG Flash at 2.3 against USB's 2.0. On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WirelessUSG Flash holds the better App Store score, 2.3 against 2.0. Both are backed by a comparable volume of ratings — 29 and 12 respectively. Written reviews complicate that: 18% of USB's written reviews are positive against 14% of WirelessUSG Flash's, so the app with the better star average is not the one people write more warmly about.

USB ships an update every 5 weeks, WirelessUSG Flash every 4 weeks. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | USB | WirelessUSG Flash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (29 ratings)](https://appshunter.io/ios/app/usb-view/id1404195213/reviews) | **[2.3 (12 ratings)](https://appshunter.io/ios/app/wirelessusg-flash/id1548235287/reviews)** |
| Number of ratings | **29** | 12 |
| Positive reviews | **18.2% of reviews** | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 8 MB | 22 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [志强 童](https://appshunter.io/developer/1214909933) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## What reviewers say

### USB

[App page](https://appshunter.io/ios/app/usb-view/id1404195213)

This application connects to WIFI image transmission equipment, enabling wireless image data transfer between cameras and iOS devices. It allows for real-time, free transmission of visuals from anywhere, anytime.

**Highlights:** WIFI image transmission, Wireless connection to iOS devices, Real-time image data transfer, Anytime, anywhere access, Free wireless transmission

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

**In-app purchases:** none


### WirelessUSG Flash

[App page](https://appshunter.io/ios/app/wirelessusg-flash/id1548235287)

This application displays ultrasound images for reference. It is important to note that it does not provide medical advice and users should consult a physician for diagnosis or treatment.

**Highlights:** Ultrasound image display, Reference imaging, Disclaimer for medical use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USB free?

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

### Is WirelessUSG Flash free?

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

### Which has better reviews, USB or WirelessUSG Flash?

WirelessUSG Flash is rated higher. USB averages 2.0 out of 5 from 29 ratings, while WirelessUSG Flash averages 2.3 from 12 ratings.

### Do USB or WirelessUSG Flash have ads?

Neither USB nor WirelessUSG Flash shows ads.

### Which is updated more often, USB or WirelessUSG Flash?

USB ships an update every 5 weeks, and WirelessUSG Flash every 4 weeks. Most recently, USB was updated on October 6, 2026 and WirelessUSG Flash on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*