Freedom251 › Monitor Control Software
MonitorControl
What MonitorControl is
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 suits
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 it does well
- 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
Limits
MonitorControl is free. Full functionality is available on macOS 11 Big Sur or newer; some Mac built-in HDMI ports do not support DDC control, although software dimming remains available for those connections.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| MonitorControl | Free · controls display brightness, volume and contrast | Free |
As monitorcontrol.app lists them, read 3 Oct 2026. The maker's own page has the final word.
Getting started
- Download the DMG from the MonitorControl website, or use the documented Homebrew command.
- Install MonitorControl on a Mac running macOS.
- Use display controls through the app, a slider, or keyboard shortcuts.
- Grant Accessibility permission if you want to use native Apple brightness and media keys.
- Open “Show advanced settings” to access additional customization options.
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.
Questions
How much does MonitorControl cost?
The listed plan costs nothing. The app has a free plan.
Which platforms does it support?
MonitorControl supports macOS.
What display controls does it provide?
It can control brightness, volume and contrast. It also supports smooth brightness transitions and dimming to full black.
How can I install it?
The maker provides a downloadable DMG and documents installation through Homebrew with `brew install --cask monitorcontrol`.
What macOS versions are compatible?
The compatibility baseline for version 4.0.0 is Catalina 10.15. Full functionality is available on macOS 11 Big Sur or newer.
When is Accessibility permission required?
Only when using native Apple brightness and media keys. Users who do not use those keys can skip permission.
Facts from MonitorControl's own pages
- Accessibility permission
- Accessibility permission is required only to use native Apple keyboard brightness and media keys; users who do not use those keys can skip it. · github.com, 3 Oct 2026
- Compatibility
- The README lists Catalina 10.15 as the compatibility baseline for version 4.0.0 and says full functionality is available on macOS 11 Big Sur or newer. · github.com, 3 Oct 2026
- Controls
- The app can control brightness, volume and contrast, and supports smooth brightness transitions and dimming to full black. · github.com, 3 Oct 2026
- Current release
- The releases page lists MonitorControl v4.4.0 as the latest release and describes it as a maintenance update for macOS 26 Tahoe and macOS 27 Golden Gate compatibility. · github.com, 3 Oct 2026
- Customization
- The app offers dozens of customization options, with additional options available by enabling “Show advanced settings.” · github.com, 3 Oct 2026
- Display limitations
- The README says some Mac built-in HDMI ports do not support DDC control, while software dimming remains available for those connections. · github.com, 3 Oct 2026
- Display protocols
- It supports DDC for external displays, native Apple protocols for Apple and built-in displays, gamma-table software dimming, and shade control for AirPlay, Sidecar, DisplayLink and other virtual screens. · github.com, 3 Oct 2026
- Installation
- The maker provides a downloadable DMG and documents installation through Homebrew with `brew install --cask monitorcontrol`. · github.com, 3 Oct 2026
- Keyboard
- Users can control displays with standard Apple brightness and media keys or custom keyboard shortcuts. · github.com, 3 Oct 2026
- Purpose
- MonitorControl controls external display brightness and volume on a Mac and shows native macOS on-screen displays. · github.com, 3 Oct 2026
- Support
- The maker directs users with questions to the project’s GitHub Discussions. · github.com, 3 Oct 2026
- Synchronization
- Users can synchronize displays with one slider or keyboard shortcuts and replicate brightness changes from built-in and Apple displays to non-Apple external displays. · github.com, 3 Oct 2026
Where MonitorControl stands on Freedom251
- Monitor Control Software#16 of 24