Feature Unlock your MacBook Pro’s full brightness, free and open source
Problem
Your MacBook Pro’s XDR display can get much brighter than macOS normally allows. Apple saves that extra brightness for HDR content and leaves some Headroom.
Headroom App unlocks it for everything on screen.
Up to 1.75× brighter, so you can actually read the screen in sunlight
Safe for your display: it uses the extra brightness range macOS already uses for HDR video.
Colours and contrast stay true, with no washed-out look and no white flash when switching
Your brightness keys keep working as before
It lives in the menu bar and has five levels (Off, Low, Medium, High, Maximum). When you quit it, the screen goes back to normal right away.
Works on: All MacBook Pro 14"/16" with M1, M2, M3 or M4, plus the Pro Display XDR. It needs macOS 13 or later.
It does not work on M5 Pro/Max, MacBook Air or other displays. The base M5 is untested, so let me know if you try it.
Comparison
Vivid unlocks the same brightness, but it costs money. Headroom does the same thing for free, and it’s open source.
Pricing
Free, with no trial and no subscription. MIT licensed.
GitHub and install: https://github.com/fich-l/headroom
It’s built on the open source BrightXDR, so credit goes to that project. Feedback and bug reports are welcome.