# USB vs Fullbox.io

USB and Fullbox.io are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

USB ships an update monthly, Fullbox.io every 5 weeks. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | USB | Fullbox.io |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 74 MB | 46 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [U.S. Boiler Company, LLC.](https://appshunter.io/developer/608292333) | [Eirene AI LLC](https://appshunter.io/developer/1851610569) |

## 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


### Fullbox.io

[App page](https://appshunter.io/ios/app/fullboxio/id6761342821)

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

**In-app purchases:** none


## Frequently asked questions

### Is USB free?

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

### Is Fullbox.io free?

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

### Do USB or Fullbox.io have ads?

Neither USB nor Fullbox.io shows ads.

### Which is updated more often, USB or Fullbox.io?

USB ships an update monthly, and Fullbox.io every 5 weeks. Most recently, USB was updated on October 10, 2026 and Fullbox.io on September 28, 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.*