# USB vs Usb Transfer

The clearest difference is in-app purchases: USB at none against Usb Transfer's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Usb Transfer sells 3 in-app purchases, starting at $2.99 per month. USB asks for nothing beyond the download.

USB ships an update monthly, Usb Transfer every 3 weeks. The most recent releases landed on September 8, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | USB | Usb Transfer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (16 ratings)](https://appshunter.io/ios/app/usb-connect/id1563292212/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 74 MB | 91 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [U.S. Boiler Company, LLC.](https://appshunter.io/developer/608292333) | [Changsha Fugui Bamboo Network Technology Co., Ltd.](https://appshunter.io/developer/1458061020) |

## What reviewers say

### 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


### Usb Transfer

[App page](https://appshunter.io/ios/app/usb-transfer/id6504265361)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 季会员 | $3.99 | per 3 months |
| 年会员 | $9.99 | per year |


## Frequently asked questions

### Is USB free?

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

### Is Usb Transfer free?

Usb Transfer is free to download, with in-app purchases available.

### Do USB or Usb Transfer have ads?

Neither USB nor Usb Transfer shows ads.

### Which is updated more often, USB or Usb Transfer?

USB ships an update monthly, and Usb Transfer every 3 weeks. Most recently, USB was updated on September 8, 2026 and Usb Transfer on September 15, 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.*