Mac app (menu bar)
Spanwise for Mac
Measure anything on your screen in points and Retina pixels, in any app, and pick any color as HEX with the macOS color loupe. Spanwise asks for no permissions and does not use the network.
Coming to the Mac App Store


Free
- Screen ruler in points and Retina pixels, with position
- Arrow-key nudging and resizing
- Color picker with HEX copy and your last 5 colors
- Global shortcuts: Control-Option-Command-R and C
Pro, $4.99 one-time
- Up to 20 rulers at once
- Guides with distance labels and snapping
- 50-color history and 6 copy formats (HEX, RGB, HSL, SwiftUI, NSColor, CSS variable)
- WCAG contrast checker with AA and AAA results
- Launch at login
Questions
Does Spanwise for Mac need Screen Recording permission?
No. It draws its rulers on a transparent overlay and picks colors with the system loupe, so it needs no Screen Recording or Accessibility permission.
Is it a subscription?
No. The app is free; Pro is a one-time $4.99 in-app purchase.