MonitorControl is a free macOS app for adjusting external display brightness and volume while using native macOS on-screen displays. It supports DDC on external monitors and Apple protocols on Apple and built-in displays. For AirPlay, Sidecar, DisplayLink, and other virtual screens, it provides shade control; gamma-table software dimming is another option. Controls cover brightness, volume, and contrast, with smooth transitions and dimming to full black. Displays can be managed with Apple brightness and media keys or custom shortcuts, and synchronized with one slider or keyboard shortcuts. The app can also replicate brightness changes from built-in and Apple displays to non-Apple external monitors. It offers dozens of customization options, with more available under “Show advanced settings.” The maker provides a DMG download and Homebrew installation instructions. The documented compatibility baseline for version 4.0.0 is Catalina 10.15, while full functionality is available on macOS 11 Big Sur or newer. Accessibility permission is needed only for native Apple brightness and media keys.
Who it is for
It suits Mac users who want to adjust or synchronize brightness, volume, or contrast across supported displays. Users relying on Apple brightness or media keys will need to grant Accessibility permission.
What is good
- Controls brightness, volume, and contrast
- Supports DDC and Apple display protocols
- Offers shortcuts and synchronized display controls
- Free for macOS
What to know first
- Full functionality requires macOS 11 Big Sur or newer
- Some built-in Mac HDMI ports do not support DDC
- Accessibility permission is needed for native Apple keys
Verdict
MonitorControl offers several ways to manage external and virtual displays, including synchronized controls and software dimming. Check the macOS requirements and display-specific DDC limitations before relying on hardware control.
MonitorControl plans and pricing
All plansCompared on monitor control software
- Free plan
- Yes
- Supported platforms
- macOS
- DDC/CI control
- Yes
- Auto brightness
- Yes
