DisplayBuddy Overview
DisplayBuddy for Mac is a menu bar utility that brings real hardware control to external monitors, something macOS normally reserves for its own built in displays. It talks to monitors directly over DDC, the same protocol most brands like Dell, LG, and Samsung already support, so brightness and contrast changes are genuine hardware adjustments rather than a software overlay dimming your screen. Beyond basic sliders, it offers Sync mode to lock several displays together, Presets to switch your whole desktop setup in one click, and Schedules that adjust brightness automatically around sunrise, sunset, or when you plug in your charger. It suits anyone juggling more than one external display who is tired of reaching behind a monitor to press tiny, unlabeled buttons.
Why Choose DisplayBuddy for Mac?
The detail most reviews skip is how DisplayBuddy actually reaches your monitor. Most brands respond to DDC commands sent right over the display cable, but when a monitor refuses those commands, DisplayBuddy automatically falls back to gamma based dimming instead, so you are never left without any control at all. For smart monitors running LG webOS or Samsung Tizen that ignore DDC entirely, it reaches them over your home WiFi network instead, something few competing Mac utilities handle at all.
The other Mac specific quirk worth knowing involves Apple Silicon and connection type. On M1 Macs specifically, the HDMI port does not forward DDC commands to an external display, for reasons Apple has never fully explained, though the same displays work perfectly fine when connected through Thunderbolt or USB C instead. That HDMI limitation does not affect M2 Macs or newer, so anyone still on an original M1 machine should plan their cable connection accordingly before assuming DDC will just work.
Key Features
- Real hardware brightness and contrast control over DDC, not gamma based dimming alone
- Automatic gamma fallback for monitors that do not support DDC commands
- WiFi based control for LG webOS and Samsung Tizen smart monitors
- Sync mode that locks brightness and contrast across multiple displays at once
- Presets for saving and instantly switching entire multi display setups
- Schedules tied to sunrise, sunset, time of day, charger state, or a newly connected display
- Desktop widgets for one click access to saved presets
- UltraBright mode that pushes a MacBook's own screen brightness beyond its default limit
- Native support across Apple Silicon chips from M1 through M5
- Siri, Shortcuts, command line, and AI agent scripting support for automation
What's New in 3.9.1 Version
- Recent releases have focused on smart monitor support and broader language coverage.
- Raised the minimum required macOS version to 12 Monterey for the current release line
- Added full user interface localization for French, Spanish, German, and both Traditional and Simplified Chinese
- Fixed a command line interface issue affecting users on Setapp
- Fixed a broken link inside the getting started guide in Settings
- Added deeper Shortcuts, Siri, and scripting support for automation and AI agent workflows
- Continued expanding language support in the most recent point release
- Together these updates make DisplayBuddy noticeably more accessible outside English speaking markets while pushing further into automation territory.
Supported macOS Versions
The current release of DisplayBuddy requires macOS 12 Monterey or later and runs natively on both Apple Silicon and Intel Macs. Anyone still running an older system, such as High Sierra, Mojave, or Catalina, can use a separate legacy build, version 1.45, which supports macOS 10.13 through 10.15 but does not receive the newer features found in current releases. On Apple Silicon specifically, M1 Macs cannot use DDC over an HDMI connection, so a Thunderbolt or USB C connection is recommended for full functionality on that generation.
How to Install DisplayBuddy on Mac?
- Go to the developer's official DisplayBuddy page for Mac
- Choose the current download for your version of macOS
- Open the downloaded file once it finishes downloading
- Move the DisplayBuddy icon into your Applications folder
- Launch the app and grant any permissions it requests for controlling displays
- Complete the purchase or start your trial period during first setup
How to Use DisplayBuddy on Mac?
- Click the DisplayBuddy icon in the menu bar to see all connected displays
- Drag the brightness or contrast slider for any monitor to adjust it directly
- Turn on Sync mode if you want several displays to move together
- Save your current setup as a Preset so you can switch to it in one click
- Open Schedules to tie a preset to sunrise, sunset, or your charger state
- Use Siri or Shortcuts to trigger brightness changes hands free
