# alin23/Lunar

Intelligent adaptive brightness for your external monitors

Repository: https://github.com/alin23/Lunar
Canonical: https://ross.abutalabs.com/products/lunar
Homepage: https://lunar.fyi
Language: Swift
License: MIT
License Family: permissive
Topics: macos, macbook, display, adaptive-brightness, ddc, monitor, brightness, brightness-control, ddc-ci, volume-control, contrast, swift, swiftui, xdr
Last push: 2026-07-14T14:28:31+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 92, release rhythm 93, longevity 100
- inputs: {"age_days": 2983, "days_push": 50, "days_rel": 50, "gap_med": 18, "n_releases_24m": 24}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5666, forks 144 (observed 2026-08-28T04:09:27.512461+00:00)

## What it is
Lunar is a macOS application for controlling external monitors: it adjusts real hardware brightness, contrast, volume, and inputs via DDC/CI, with native support for Apple displays. It offers adaptive brightness modes (sensor, sync, location-based), hotkeys, XDR brightness, sub-zero dimming, and selective monitor blackout.

## Use cases
- control brightness of external monitors on mac
- sync macbook adaptive brightness to external displays
- dim monitor below 0% for night work
- switch monitor input with hotkeys
- turn off a monitor while keeping USB and audio
- unlock XDR/HDR brightness on supported displays
- adjust monitor volume and contrast from keyboard

## When to choose
- you use external monitors with a Mac and want real DDC brightness control instead of software overlays
- you want ambient-light or sunset-based automatic brightness on non-Apple displays
- you need input switching, orientation changes, or selective monitor blackout from the menu bar

## When to avoid
- you are on Windows or Linux
- your monitor does not support DDC/CI and is not an Apple display
- you need a cross-platform or headless display-control solution

## Facets
- artifact type: application
- maturity: active
- function: gui, developer-tools
- domain: desktop-applications, hardware, developer-tools
- platform: -
- tags: ddc-ci, adaptive-brightness, monitor-control, external-displays, xdr, swiftui, menu-bar-app, macos, desktop

## Member repositories
- alin23/Lunar (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:27.512461+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:21:36.167342+00:00, confidence not recorded.
  - readme: https://github.com/alin23/Lunar (fetched 2026-08-28T04:09:27.512461+00:00, sha 70bd9a5f2425)
  - homepage: https://lunar.fyi (fetched 2026-08-29T08:49:38.090258+00:00, sha 01b87c65d9b0)
  - site_page: https://lunar.fyi/changelog (fetched 2026-08-29T08:49:38.096324+00:00, sha 188c276b0310)
  - site_page: https://lunar.fyi/faq (fetched 2026-08-29T08:49:38.101198+00:00, sha f7e8f1f6923f)
  - site_page: https://lunar.fyi/pro (fetched 2026-08-29T08:49:38.106261+00:00, sha 6c6aa6daeee8)
- Data as of 2026-08-30T08:39:29.467469+00:00.