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USB Connection Information

USB Connection Information

USB Speeds at a Glance

3 ratings
22 reviews
🔧 Utilities
🌟 Lifestyle
$9.99

Details

  • Released
  • Updated
  • June 27, 2025
  • July 2, 2026

Features

Developer

Daniel Gauthier
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USB Connection Information screenshot #1 for iPhone
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❓8 answered
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About

Verify the real performance of your USB and Lightning connections. Measure data transfer speeds, estimate charging wattage, and identify device capabilities. Perfect for ensuring your cables and chargers are working optimally.

✓Data Speed Testing
✓Charging Speed & Voltage Fingerprinting
✓Charging Curve Logging
✓Device Capability Identification
✓Detailed Drive Info
✓Test History
Show original description

What's New in USB Connection Information

26.1

July 2, 2026

Minor bug fixes and performance improvements.

User reviews

Most RecentHighest RatedLowest Rated

Works as described

Now I can test if my attached storage is working at USB 2.0 or USB 3.0 speeds. Thanks! I also like the image export option.
UNC#84EVRA8GUNC#84EVRA8G

👍👍👍

I had no idea this was possible on the iPhone! Love this app, easy to use. Really cool to be able to run USB tests on iPhone. Worth the download
Avlover6Avlover6

Very Handy!

Do you have a bunch of USB-C power bricks lying around, and you’re not sure which ones will supply enough power to quick charge your MBP? This is the app. Sure, you can look in system information every time you plug something in, but this is faster.
BostonDougBostonDoug

Response from developer

Thank you for taking the time to share your experience! It's fantastic to hear that the app is helping you sort through your power adapters. Feedback like this is incredibly motivating. Please don't hesitate to reach out if you ever have a feature request!

why not a window?

Does a great job at displaying all your devices’ connection speeds, but crams it all into a dropdown menu for some reason. This would be a much better fit for display in a window.
Ignatius_J_ReillyIgnatius_J_Reilly

Response from developer

That's good feedback, you're right, a full GUI would be a great for a more detailed view. The current app is designed to be a quick, text-based utility that lives in the menu bar, but I am actively exploring a more comprehensive 'Connection Information Center' as a separate, full-window app. If you'd be interested in testing something like that down the road, please feel free to reach out to our support email at dan@usbconnectioninformation.com. I'd love to get your thoughts when the time comes. Thanks again for the great suggestion!

Great :)

Very useful. Sometimes when I connect my iPhone 16 pro max and my Samsung T9 SSD it only shows the slow speed for one of them like 480 so I need to verify using this app and make sure they both show 10 for the speed which is a fast USB 3 speed so if it’s not i just disconnect and reconnect. I use that especially with the great local backup program that backs up the iPhone to the mac called iMazing. It’s like Time Machine for the iPhone. it can do so much.
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DudemanLADudemanLA

Response from developer

That is awesome to hear! Verifying the connection speed before running a heavy local backup is a great use case. I'm glad the app helps you catch slow cables quickly. Thank you so much for the kind words!

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FAQ

What is USB Connection Information?

USB Connection Information is a utility app that helps you verify the real performance of your USB and Lightning connections. It measures data transfer speeds and estimates charging wattage to ensure your devices and accessories are performing as expected.

How much does USB Connection Information cost?

USB Connection Information is a paid app priced at $9.99. This one-time purchase grants you access to all its features for verifying your device connections.

Does USB Connection Information have ads?

No, USB Connection Information does not contain advertisements. It is a paid application designed to be ad-free for a seamless user experience.

What devices does USB Connection Information support?

USB Connection Information is available for iPhone and Mac devices. It is designed to work with iOS and macOS operating systems.

How accurate is the charging wattage estimation?

Charging wattage is estimated by measuring battery percentage changes over time, representing the power reaching the battery. For best results, run tests when the battery is between 20%-50% and screen brightness is low.

Can I test internal storage with USB Connection Information?

No, the app includes intelligent warnings to prevent testing internal storage by mistake or causing excessive drive wear. It focuses on external USB and Lightning drives.

How often is USB Connection Information updated?

The latest version, 26.0, was released on June 29, 2026. Updates are provided by the developer, Daniel Gauthier, to ensure continued functionality and improvements.

Is my data private with USB Connection Information?

Yes, the app is designed to be private and efficient. Your data never leaves your device, with no tracking, telemetry, or cloud sync.