USB Connection Information

USB Connection Information

USB Speeds at a Glance

3 ratings
26 reviews
$9.99

Details

  • Released
  • Updated
  • June 27, 2025
  • September 25, 2026

Features

USB Connection Information screenshot #1 for iPhone
USB Connection Information screenshot #2 for iPhone
USB Connection Information screenshot #3 for iPhone
USB Connection Information screenshot #4 for iPhone
USB Connection Information screenshot #5 for iPhone
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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.

โœ“Data Speed Testing
โœ“Charging Speed & Voltage Fingerprinting
โœ“Charging Curve Logging
โœ“Device Capability Identification
โœ“Detailed Drive Info
โœ“Test History
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+1

What's New in USB Connection Information

26.4

September 25, 2026

Minor bug fixes and performance improvements.

User reviews

Pity about the popups

Great app but I do not tolerate apps that interrupt my work to ask me to rate them. Please do not.

Response from developer

Thanks for the kind words, and fair point. The rating request is Apple's standard system prompt, and macOS shows it at most three times a year. If you'd rather never see it from any app, you can turn it off in System Settings, App Store, the In-App Ratings & Reviews. I'll also look at asking less often. Thanks for taking the time to write this.

Full-featured, accurate, useful!

Even though the UI is a bit basic, this is a super useful and surprisingly full-featured app. It can easily replace $10 worth of HW, and now I donโ€™t need any extra devices. Really helpful in debugging why something might be charging slowly or transferring slowly. I particularly like the โ€œnotify me if a cable is limiting transfer speedโ€ feature. So cool!
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Response from developer

Thanks for taking the time to review! If you haven't gotten the chance yet, try out the mobile app too. If you need anything or have any recommendations, please feel free to reach out. I love to drive the app's direction with feedback from customers.

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.

๐Ÿ‘๐Ÿ‘๐Ÿ‘

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

Very Handy!

Do you have a bunch of USB-C power bricks lying around, and youโ€™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.

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!

Developer apps

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.