Sundown is a Mac menu-bar app that drives your display far warmer and dimmer than Apple's built-in settings allow. Night Shift's warmest setting is roughly 2700K; Sundown goes to 500K — deep, candlelight red — on a schedule tied to sunset and sunrise. Six presets from Flow to Biohacker, gamma-curve dimming for extra depth without added flicker, and a science page citing the primary research. Native Swift with no Electron runtime — a ~6 MB download — and no account required. macOS 14+.

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Listed: 2026-10-13
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