Comparison

USB vs HDMI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

USB

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
Read full description

USB-Connect is a commissioning, diagnostic and service tool consisting of a Bluetooth Adaptor and mobile device app. The app communicates with any U.S. Boiler modulating condensing boiler. USB-Connect is a local service tool with web portal data collection and live streaming to enable remote support. Compatible Boilers include Alpine, Alta, AltaC, Aspen, AspenC, K2WT, K2WTC, K2FT and XC Modulating Condensing Boilers. USB-Connect Features: • Bluetooth Adaptor connects boiler to USB-Connect App. • English and Spanish Language. • Start-up, Troubleshoot and Service Wizards. • Data logs, site photos, service & status reports sent to cloud. • Alta Boiler Control firmware and default parameter updates.

About

HDMI

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
Read full description

Turn your device into an external display with HDMI Monitor, perfect for gaming, photo- & video-shooting, and more. Connect your gaming console to your device and enjoy your favorite games without the need to have a TV or Display at hand. Key Features: - Versatile Functionality: Seamless integration with consoles, cameras, professional photoshooting gear, PC, and just about any other device that supports HDMI output. - High-Quality Streaming: Crystal-clear HD video and high-quality audio, with full support for your headphones. - Get a Display and High-Quality Speakers: Turn your device into a media station that’s part of the ecosystem that you can access for complete immersion and 100% satisfaction. - Fast and User-Friendly: Quick setup and responsive design for a hassle-free experience. Improved Connectivity: - Use a simple USB-C video-capture card for easy connection. - Supports various resolutions and frame rates for optimal video clarity. Ideal For: - Gamers, photographers, videographers and geeks. - Anyone needing a portable screen for games, movies, TV, or presentations. You need: HDMI to USB-C Video Capture Card, iPad with USB-C and iOS 17 Try the ultimate app that turns your device into a universal display!

Screenshots

USB4 screens
HDMI3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
USB versus HDMI: the parameters behind the verdict, then further details
ParameterUSBHDMI
PriceFreeFree
Rating4.2 (16 ratings) — better2.9 (75 ratings)
Positive reviews75.0% of reviews — better52.2% of reviews
Number of ratings1675 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size74 MB83 MB
Age rating4+4+
DeveloperU.S. Boiler Company, LLC.Ion Danilov

Customer experience

USB

All ratings16 ratings
Positive81.3%
Neutral0.0%
Negative18.8%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

HDMI

All ratings74 ratings
Positive47.3%
Neutral4.1%
Negative48.6%
Written reviews23 reviews
Positive52.2%
Neutral0.0%
Negative47.8%

In-app purchases

None

USB

No in-app purchases

None

HDMI

No in-app purchases

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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