lunar ☆
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Description:
Adaptive brightness for external displays
Type: Cask  |  Latest Version: 6.10.4@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @lunar_fyi  |  formulae.brew.sh
Category: System utilities
Tags: brightness monitor-control productivity accessibility ddc-ci
Install: brew install --cask lunar
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.
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
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
Alternatives:
  • MonitorControl – Open-source alternative with similar DDC/CI functionality but fewer adaptive features
  • Brightness Sync – Basic sync tool without Lunar's advanced automation and sub-zero brightness
Version History
Detected Version Rev Change Commit
May 25, 2026 4:52pm 6.10.4 0 VERSION_BUMP 5d81b64f
May 14, 2026 10:47am 6.10.3 0 VERSION_BUMP b85e1c4e
May 8, 2026 1:32pm 6.10.2 0 VERSION_BUMP 0d336aa4
Apr 11, 2026 1:16pm 6.10.1 0 VERSION_BUMP bb79c59a
Apr 10, 2026 5:15am 6.10.0 0 VERSION_BUMP 0babfbde
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
Sep 19, 2023 11:13am 6.2.7 0 VERSION_BUMP 4ad25975
Sep 18, 2023 9:49am 6.2.6 0 VERSION_BUMP 67af8ebd
Sep 4, 2023 11:36am 6.2.5 0 VERSION_BUMP 5858f349
Jul 30, 2023 4:58pm 6.2.2 0 VERSION_BUMP 998aad62
Jul 9, 2023 9:47am 6.1.5 0 VERSION_BUMP fdf1bab8
Apr 11, 2023 1:13pm 6.1.0 0 VERSION_BUMP 705ce478
Mar 28, 2023 7:45am 6.0.3 0 VERSION_BUMP 3b2a7288
Mar 21, 2023 10:46pm 6.0.2 0 VERSION_BUMP c7fd5082
Mar 19, 2023 5:20am 6.0.1 0 VERSION_BUMP 734dc83c
Mar 17, 2023 7:55pm 6.0.0 0 VERSION_BUMP 90beb288
Jan 26, 2023 12:17pm 5.9.5 0 VERSION_BUMP 67a82b58
Jan 19, 2023 5:17am 5.9.4 0 VERSION_BUMP 4ae810d8
Jan 13, 2023 12:21am 5.9.3 0 VERSION_BUMP be4260da
Jan 10, 2023 10:08pm 5.9.2 0 VERSION_BUMP d37da0cf
Jan 6, 2023 11:18pm 5.9.1 0 VERSION_BUMP 143cf867
Jan 5, 2023 8:50pm 5.9.0 0 VERSION_BUMP 2d346cda
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