DisplayBuddy is a native Mac utility that puts monitor brightness, resolution, and display controls directly in your menu bar, giving you instant access to settings that macOS buries three dialogs deep.
What is DisplayBuddy?
DisplayBuddy is a menu-bar app for macOS that consolidates external monitor controls — brightness, contrast, resolution switching, and input selection — into a single, always-accessible panel. If you have ever hunted for the physical buttons on the back of a Dell or LG display just to knock the brightness down before a video call, DisplayBuddy is the app that makes that frustration disappear for good.
What makes it genuinely useful rather than merely convenient is that it talks directly to monitors over DDC/CI — the industry protocol that lets software speak to the display's firmware. That means real hardware-level brightness adjustment, not the software overlay trick that dims your backlight through a grey filter the way older utilities do.
What does DisplayBuddy do best?
DisplayBuddy excels at taming multi-monitor setups where each screen has different brightness needs throughout the day. I run two externals alongside the built-in MacBook display, and being able to drag a single slider for each from the menu bar — rather than reaching around to press tiny physical buttons — has genuinely changed how I use my desk.
Beyond brightness, the resolution switcher is the second standout feature. Swapping between native 4K and a scaled HiDPI resolution for screen recording takes one click instead of the System Settings → Displays → scaled detour. For anyone who records tutorials or demos at a specific pixel density, that alone justifies the install.
- DDC/CI brightness & contrast — hardware-level, not a screen overlay
- Per-display resolution switching — all connected screens, one panel
- Input source switching — flip a monitor between your Mac and another machine
- Menu-bar quick access — no diving into System Settings
- Keyboard shortcuts — assign hotkeys to brightness steps or resolution presets
How much does DisplayBuddy cost?
DisplayBuddy is available as a paid app with a free trial so you can verify DDC/CI compatibility with your specific monitors before committing. Pricing is a one-time purchase — not a subscription — which I find refreshing in an era when every utility wants a monthly fee. Check the official site at displaybuddy.app for the current price, as it is updated periodically.
Whether the purchase makes sense depends almost entirely on how many external displays you use. For a single-monitor setup where the built-in display handles brightness automatically, the value is modest. For two or more externals, it pays for itself in reclaimed time within the first week.
Who should use DisplayBuddy?
DisplayBuddy is squarely aimed at Mac power users who work with one or more external monitors and find themselves adjusting display settings throughout the day — developers on wide ultrawide panels, video editors jumping between colour-critical and ambient light conditions, and anyone who uses a single monitor with multiple input sources (Mac plus a gaming console, for instance).
It is less useful if your entire setup is Apple-branded displays. Apple's own monitors expose brightness through macOS natively, so the menu-bar shortcut adds convenience but not the DDC/CI magic that makes DisplayBuddy irreplaceable on third-party panels. If you are running all Apple Studio Displays or a Pro Display XDR, the built-in controls may be sufficient.
What are the best DisplayBuddy alternatives?
The closest competitor is MonitorControl, a free, open-source app that also uses DDC/CI for external display brightness. MonitorControl is genuinely excellent and free to download — if budget is a concern, start there. Lunar is the other serious contender: it adds adaptive brightness modes (syncs external monitors to ambient light or to the built-in display's sensor) and is more feature-dense, though that depth comes with a steeper learning curve and a subscription pricing tier. DisplayBuddy sits between the two — more polished and intentional than MonitorControl's utilitarian UI, less complex than Lunar's full automation suite.
For resolution switching specifically, ResolutionChanger and the built-in Displays pane cover the basics, but neither gives you the one-click menu-bar access that makes DisplayBuddy fast enough to actually use mid-workflow.
How does DisplayBuddy compare to Lunar?
Lunar offers more automation — it can learn your brightness preferences by time of day, location, or ambient sensor — while DisplayBuddy stays deliberately manual and immediate. I find Lunar's automation occasionally fights me when I want a specific brightness that conflicts with its schedule; DisplayBuddy just does what I tell it. If you want set-and-forget adaptive brightness, Lunar wins. If you want fast, frictionless manual control with a clean UI, DisplayBuddy is the better fit.
