Drive Verdict: USB Checker
Is my USB drive fake or slow?
Only for Mac
$3.99
Mac
Plug in a USB stick, SD card or external drive and find out if it's genuine, how fast it really is, and whether the cable is slowing it down, in plain English.
Cheap flash drives often lie about their size: they accept your files and quietly lose them. This app tells you the truth about any drive you plug in.
FULL CHECK
• Fills the free space with test data and reads every block back
• Each block is stamped with its own position, so a counterfeit can't fake a pass
• Tells you the drive's real usable size if it's fake
• Your existing files are left alone, and test files are always deleted
SPEED TEST
• Real write and read speeds, measured without the Mac's cache
• Small random reads, for how snappy the drive feels
CONNECTION CHECK
• Shows the actual USB link speed and explains problems plainly, like "this USB 3 drive is running at USB 2 speed, try another cable"
REPORTS
• A clear Passed / Needs attention / Failed verdict
• Save as PDF or copy as text, handy for a refund request
• History of every drive you've checked
SAFE
Only drives you plug in can be tested, never your Mac's startup disk. It writes only to the drive you choose.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Kevin Fitzgerald, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kevin Fitzgerald
- Size
- 1.5 MB
- Category
- Utilities
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Kevin Fitzgerald
