MacGlow – Sync brightness across Mac and all connected monitors

Summary: MacGlow is a macOS app that synchronizes brightness levels across a Mac and all connected monitors, supporting every MacBook Air, Pro, iMac, and Mac Mini running macOS 12.4 or later. It offers three modes to control brightness independently, match the Mac’s brightness, or maintain a relative difference.

What it does

MacGlow adjusts brightness on a Mac and external monitors with three configurable modes: manual control per display, real-time syncing with the Mac’s brightness, or maintaining a relative brightness difference.

Who it's for

Users with multiple monitors connected to Macs who need precise and synchronized brightness control across devices.

Why it matters

It eliminates the need to manually adjust brightness on each monitor, providing finer and consistent brightness management.