Transom app icon

Transom

Brightness controller

Version
1.2.7
Oct 19, 2026
Downloads
138
All versions
Requires
macOS 26
or later
Price
Free
Open source
Size
5.1
MB

Your brightness keys adjust whichever display the mouse is on, Apple displays and ordinary external monitors alike.

Features

  • Brightness keys act on the display under the cursor
  • Apple displays natively, ordinary monitors via DDC/CI
  • A Liquid Glass HUD matching the system’s own
  • ⌥⇧ for fine quarter-steps, hold for smooth ramps

What’s New

Version History
Version 1.2.7

Changed

  • Opening Transom again while it's running, from Spotlight or the Applications folder, brings up Settings.

Fixed

  • With the menu bar icon hidden, opening Transom when it wasn't running showed no window.

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