# USB vs HDMI

The clearest difference is rating: USB at 4.2 against HDMI's 2.9. USB also leads on review sentiment (75% vs 52%) and iOS requirement (13.0 vs 17.0). HDMI's advantage is ratings volume (75 vs 16). On price, update cadence, ads and in-app purchases there is nothing between them.

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

USB holds the better App Store score, 4.2 against 2.9. Both are backed by a comparable volume of ratings — 16 and 75 respectively. Written reviews point the same way: 75% of USB's written reviews are positive against 52% of HDMI's.

USB ships an update monthly, HDMI every 3 weeks. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | USB | HDMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (16 ratings)](https://appshunter.io/ios/app/usb-connect/id1563292212/reviews)** | [2.9 (75 ratings)](https://appshunter.io/ios/app/hdmi/id6476621872/reviews) |
| Number of ratings | 16 | **75** |
| Positive reviews | **75.0% of reviews** | 52.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 74 MB | 83 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [U.S. Boiler Company, LLC.](https://appshunter.io/developer/608292333) | [Ion Danilov](https://appshunter.io/developer/1727366898) |

## 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


### HDMI

[App page](https://appshunter.io/ios/app/hdmi/id6476621872)

Transform your device into an external monitor for gaming, photography, and video. Connect consoles, cameras, PCs, and more for high-quality HD streaming. Enjoy a portable display and immersive audio experience.

**Highlights:** External display functionality, Connect gaming consoles, High-quality HD streaming, Supports cameras and PCs, Portable screen solution, USB-C video capture card compatible

**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 HDMI free?

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

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

USB is rated higher. USB averages 4.2 out of 5 from 16 ratings, while HDMI averages 2.9 from 75 ratings.

### Do USB or HDMI have ads?

Neither USB nor HDMI shows ads.

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

USB ships an update monthly, and HDMI every 3 weeks. Most recently, USB was updated on October 10, 2026 and HDMI on October 20, 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.*