Measure anything on screen
Point at whatever is rendered — in any app — and get exact size, position, and spacing. Inspector snaps to real edges, not guesses.
Inspector · native macOS tools
Measure anything on your screen.
Pixel-accurate design tools in your menu bar — measure, pick colors, overlay designs, and record. No cloud, no account.
Rulers
Drop persistent guides to check alignment across windows, browsers, and simulators.
Pick colors
Loupe-precise eyedropper with history and a built-in WCAG contrast check.
Magnifier
Zoom into anti-aliasing, hairlines, and rendering artifacts without a screenshot.
Design overlay
Float your mockup over the live build and spot every drifted pixel.
Record & scrub frame by frame
Capture a region at full refresh rate, then scrub through animations and glitches that are too fast to catch live.
Questions
Is this a subscription?
No. Inspector is $9.99, once. That includes the app and updates delivered right in the app.
How does the free trial work?
Download the app and use everything, full-featured, for 14 days. No account, no credit card. When the trial ends, buy a license key and enter it in the app.
Does it work with any app?
Yes. Inspector measures what your screen actually shows, so it works over browsers, design tools, simulators, terminals — anything you can see.
What permissions does it need?
Screen Recording (to read pixels for measuring and color picking) and Accessibility (for element detection). Everything is processed on your Mac — nothing is uploaded, and there's no telemetry.
Which Macs does it run on?
Apple Silicon Macs running macOS 14 Sonoma or later.
Ready to measure?
Try it free for 14 days. Buy when it earns a spot in your menu bar — $9.99, once.