# USB Sharp vs USB

The clearest difference is rating: USB at 4.2 against USB Sharp's 3.1. USB also leads on in-app purchases (none vs 6) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. USB Sharp sells 6 one-off in-app purchases. USB asks for nothing beyond the download.

USB holds the better App Store score, 4.2 against 3.1. Both are backed by a comparable volume of ratings — 18 and 16 respectively. Written reviews point the same way: 53% of USB Sharp's written reviews are positive against 75% of USB's.

USB Sharp ships an update every 3 weeks, USB monthly. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | USB Sharp | USB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (18 ratings)](https://appshunter.io/ios/app/usb-sharp/id427762463/reviews) | **[4.2 (16 ratings)](https://appshunter.io/ios/app/usb-connect/id1563292212/reviews)** |
| Number of ratings | **18** | 16 |
| Positive reviews | 53.2% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 74 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [U.S. Boiler Company, LLC.](https://appshunter.io/developer/608292333) |

## What reviewers say

### USB Sharp

[App page](https://appshunter.io/ios/app/usb-sharp/id427762463)

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Upload multiple files via Chrome and Firefox, extract encrypted RAR archives, and organize documents, photos, and videos with ease.

**Highlights:** Portable wireless storage, File management, Multiple file upload, Encrypted archive extraction, Document reader, Photo viewer, Video player

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Music Player | $0.99 | one-time |
| Dropbox | $0.99 | one-time |
| Video Player | $0.99 | one-time |
| SkyDrive | $0.99 | one-time |
| Full Version | $2.99 | one-time |


### USB

[App page](https://appshunter.io/ios/app/usb-connect/id1563292212)

This tool connects to U.S. Boiler modulating condensing boilers via a Bluetooth adapter for commissioning, diagnostics, and service. It offers wizards for startup and troubleshooting, data logging, and remote support capabilities through a web portal.

**Highlights:** Bluetooth connectivity to boilers, Commissioning, diagnostic, and service functions, Startup, troubleshoot, and service wizards, Cloud data logging and reporting, Remote support via web portal, Boiler firmware and parameter updates

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp free?

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

### Is USB free?

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

### Which has better reviews, USB Sharp or USB?

USB is rated higher. USB Sharp averages 3.1 out of 5 from 18 ratings, while USB averages 4.2 from 16 ratings.

### Do USB Sharp or USB have ads?

USB Sharp shows ads; USB does not.

### Which is updated more often, USB Sharp or USB?

USB Sharp ships an update every 3 weeks, and USB monthly. Most recently, USB Sharp was updated on September 21, 2026 and USB on September 8, 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.*