Description:
Adaptive brightness for external displays
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Type: Cask
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Latest Version: 6.9.10@0
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Tracked Since: Dec 28, 2025
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Links:
Homepage |
@lunar_fyi |
formulae.brew.sh
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Category: System utilities
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Tags:
brightness
monitor-control
productivity
accessibility
ddc-ci
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Install:
brew install --cask lunar
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About:
Lunar is a macOS utility that intelligently controls the brightness and volume of external monitors connected via USB-C, DisplayPort, or HDMI. It uses ambient light sensors or keyboard input to automatically adjust display settings, providing a seamless experience similar to Apple's native display features. The tool helps reduce eye strain and improves workflow by syncing external displays with your Mac's built-in screen.
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Key Features:
- Adaptive brightness based on ambient light and keyboard activity
- Hardware-level brightness control for unsupported monitors
- Sub-zero brightness for comfortable dark mode usage
- DDC/CI protocol support for precise monitor adjustments
- Custom shortcuts and automation workflows
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Use Cases:
- Working in varying lighting conditions with external monitors
- Matching brightness between MacBook display and external monitors
- Reducing eye strain during late-night coding sessions
- Controlling monitors that lack native macOS brightness support
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Alternatives:
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MonitorControl
– Open-source alternative with similar DDC/CI functionality but fewer adaptive features
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Brightness Sync
– Basic sync tool without Lunar's advanced automation and sub-zero brightness
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| Detected |
Version |
Rev |
Change |
Commit |
| Mar 9, 2026 10:14pm |
6.9.10 |
0 |
VERSION_BUMP |
b20d5c12 |
| Feb 28, 2026 7:11pm |
6.9.9 |
0 |
VERSION_BUMP |
ec793bad |
| Feb 22, 2026 4:10pm |
6.9.8 |
0 |
VERSION_BUMP |
6588741c |
| Feb 12, 2026 10:14am |
6.9.7 |
0 |
VERSION_BUMP |
4b701058 |
| Jan 30, 2026 10:15pm |
6.9.6 |
0 |
VERSION_BUMP |
8ff052e3 |
| Sep 19, 2025 1:35pm |
6.9.0 |
0 |
VERSION_BUMP |
a309ce6a |
| Jul 30, 2024 9:39am |
6.8.1 |
0 |
VERSION_BUMP |
f520f287 |
| Apr 1, 2024 12:43pm |
6.7.4 |
0 |
VERSION_BUMP |
e9a0414a |
| Mar 21, 2024 9:34am |
6.7.2 |
0 |
VERSION_BUMP |
f8ccdcc1 |
| Jan 2, 2024 9:57am |
6.5.0 |
0 |
VERSION_BUMP |
17346b7d |
| Nov 13, 2023 1:20pm |
6.4.2 |
0 |
VERSION_BUMP |
dcf2d35e |
| Nov 13, 2023 7:38am |
6.4.1 |
0 |
VERSION_BUMP |
b034a30a |
| Nov 6, 2023 11:34am |
6.3.0 |
0 |
VERSION_BUMP |
3c2ace7e |
| Nov 5, 2023 9:16am |
6.3.0 |
0 |
VERSION_BUMP |
e2029010 |
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