BetterDisplay vs ddcctl

BetterDisplay is a macOS app for managing display brightness, resolution, color, and connections. It can provide flexible HiDPI scaling for internal and natively connected external displays, and create virtual screens with different aspect ratios and resolutions. XDR and HDR brightness upscaling is available, though support depends on the Mac and display. Picture in Picture windows can show physical displays or virtual screens, and the app can capture selected windows or groups. Compatible connections support DDC hardware control and HDMI-CEC; network control is listed for LG webOS, Samsung Tizen, Philips Android TV, and Yamaha AVR. Automation options include macOS Shortcuts, command-line access, custom URLs, HTTP, notifications, and scripts. The app is free for non-business users after the 14-day trial, but Pro features require a license. BetterDisplay Pro costs $21.99, paid once for a perpetual license for covered versions and includes at least one year of updates. Businesses need a Pro license after the trial even for free functionality. Compatibility varies with the Mac, macOS version, display, and connection.

ddcctl is a free GPLv3 open-source command-line utility for adjusting external monitor controls from the macOS shell. Its primary controls are brightness and contrast. Depending on monitor firmware, it may also switch input source, change built-in speaker volume or RGB colors, select color presets, and reset settings. The stated scope is macOS, Macintosh hardware, and DDC-controlled monitors. Installation is available through Homebrew, downloadable release binaries, or a source build; building requires Xcode and running make. Example scripts can be invoked by Alfred, ControlPlane, or Karabiner to switch presets. The project describes itself as a personal utility in maintenance mode and asks users to debug their own issues. Its maker says there is no time to triage new issues or support non-bugs, and no support or discussion forum is planned. Verification is manual, with no CI connected to real Macs and monitors. The releases page lists v1 as the latest release. The listed controls include DDC/CI, input switching, and command-line access.