Show HN: Content-adaptive display brightness for macOS with DDC/CI support

Category: devtools

Tags: macos, brightness-control, ddc-ci, screen-capturekit, menu-bar-app

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 6)

Lumos is a macOS menu-bar app that adapts display brightness to on-screen content, using ScreenCaptureKit to sample luminance and DDC/CI to control external monitors. It learns per-display brightness curves from user corrections and supports pausing per app, aiming to reduce eye strain and manual adjustment.

Target audience: macOS power users, developers, and anyone using external monitors who wants automatic brightness control

Repository: https://github.com/lenbrocki/lumos · Swift · MIT · 30 stars

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