Intelligent adaptive brightness for your external display
The built-in display brightness of your Macbook or iMac is synchronized to the external monitor. Custom brightness and contrast values are computed for each external monitor by passing the built-in brightness through a curve algorithm that is completely configurable by the user.

Latest launches

Lunar 5
Control every aspect of your external monitors
Lunar Lite
Brightness sliders for all your displays
Lunar 4
Control all your monitors, even on M1

What people like about Lunar

, , and 24 others highly rated Lunar for its design, ease of use and benefits. Read reviews
Based on 28 reviews
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Lunar's news

All news
  • Launch
    If you got a new monitor for your Mac, you noticed there's no way to control its brightness from the Mac.

    Lunar brings back brightness control for monitors, along with volume, contrast, input switching and can even turn off monitors or the built-in display.
  • Launch
    Dim the brightness of monitors, wireless displays, iPad Sidecar and AirPlay displays using simple sliders in your menu bar.

    Lunar Lite is the lite version of Lunar, an app for controlling every aspect of your external monitors (
  • Announcement
    #5 Product of the day
    Lunar 4 ranked 5th Product of the day for May 31, 2021 with 84 upvotes and 16 comments
    May 31, 2021
  • Launch
    Lunar 4 brings support for controlling monitors on M1 Macs, auto-learning curve when adjusting brightness, external light sensor support and Facelight which allows you to use an external monitor to light up your face in video calls.
  • Launch

    Smarter controls and a new Adaptive algorithm for your external displays.

    • the brightness/contrast can respond to the built-in light sensor readings

    • use the brightness keys to adjust external monitor's brightness