Sundown

Mac menu bar app that warms and dims your screen through the evening

Visit WebsiteShare

Sundown lives in your Mac's menu bar. Set a schedule and it carries the display from its usual 6500 K white toward amber and then red as the evening goes on, down to 500 K in 100 K steps, while bringing the brightness down with it. A slider in the menu bar panel lets you pick any warmth by hand when you want to. It works on macOS 14 or later, and Jack Richards makes it. Background reading lives on the site. https://trysundown.com/science goes through the research on evening light, and https://trysundown.com/research/screen-flicker-and-eye-strain lays out 29 PubMed-cited studies on flicker and eye strain in an evidence table, including where the evidence is thin.