DisplayBuddy is a Mac utility for controlling compatible external monitors without reaching for their physical buttons. It uses DDC when a display supports it, letting macOS adjust hardware brightness, contrast, volume, input source, resolution, rotation, and power controls from one place.

It is especially useful when a desk has more than one display. You can synchronize adjustments, save a preferred multi-monitor arrangement as a preset, and apply that preset manually or through a schedule tied to conditions such as time of day, dark mode, charging, or connected displays.

Monitor support varies because DDC implementations and docking setups vary. DisplayBuddy includes a software-dimming fallback for unsupported displays and Wi-Fi control for compatible LG webOS and Samsung Tizen displays, but the specific controls should be tested with the actual hardware.

Features

Adjust compatible displays’ hardware brightness, contrast, volume, input source, resolution, rotation, and power controls through DDC.
Synchronize brightness and other supported adjustments across multiple external displays.
Save display presets that can include supported settings and a multi-display arrangement.
Schedule presets around time, sunrise or sunset, dark mode, charging, and display connection events.
Use keyboard shortcuts, menu-bar controls, Shortcuts, Siri, command-line tools, or supported MCP integrations to trigger controls.
Fall back to software gamma dimming when direct monitor control is unavailable, and control compatible LG and Samsung smart displays over Wi-Fi.

Where it fits

DisplayBuddy fits a desk setup where external-monitor settings are adjusted often or need to move together. It is a focused alternative to changing each monitor with its own on-screen display.

It is not a guarantee that every port, dock, adapter, or monitor exposes the same controls. Try the free compatibility path before depending on a particular DDC or input-switching workflow.

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Features

Where it fits

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