Meet
Lunar.The defacto app for controlling monitors.
Lunar is a display-control app that makes external monitors behave more like a MacBook’s built-in screen. It focuses on matching brightness, contrast, volume, input, and ambient-light behavior across connected displays, so a multi-screen desk does not require separate manual adjustments.
The core workflow is simple: change brightness on the Mac, and compatible external screens follow. Lunar can also react to ambient light, synchronize displays, remember configurations, and help manage monitor settings that macOS does not consistently expose through the keyboard.
It is built for people who want external screens to disappear into the Mac experience. The app works best with monitors that support DDC control, while its more advanced features help when the hardware or connection requires a software workaround.
Features
- Control brightness, contrast, volume, input source, and other compatible monitor settings from the menu bar or keyboard.
- Synchronize built-in and external display brightness so a single adjustment keeps a multi-screen workspace balanced.
- Adapt compatible display settings to ambient light and time of day instead of requiring manual changes throughout the day.
- Save monitor-specific presets and configurations for different desks, displays, or use cases.
- Use software dimming and current hardware-control options when a monitor does not expose every setting through standard macOS controls.
- Monitor connected displays and apply automation that responds to the screen, power, or current workspace.
Where it fits
Lunar is ideal for Mac users with external displays who want brightness keys and display behavior to feel unified. It is particularly useful for laptop-and-monitor setups that move between bright daytime work and lower-light evenings.
Its capabilities depend on the monitor, cable, and DDC support. Users who only need occasional manual brightness changes may find a simpler display utility sufficient.
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