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Sundown

Warmer Than Night Shift Can Go

Utilities Paid by Jack Richards 73 views · 1 clicks out

Get Sundown

At a glance

  • macOS 14+
  • Utilities
  • Paid
  • ~6 MB

About Sundown

Sundown drives your display far warmer and dimmer than macOS lets you on its own. Night Shift stops at roughly 2700K; Sundown goes down to 500K, deep, candlelight red, on a schedule tied to your local sunset and sunrise. Six presets run from Flow to Biohacker, and gamma-curve dimming takes the screen darker without adding flicker.

Features

  • Down to 500K: Night Shift's warmest setting is around 2700K. Sundown keeps going, into candlelight red.
  • Tied to the Sun: The schedule follows your actual sunset and sunrise rather than a clock time you have to keep adjusting.
  • Six Presets: From Flow, for a gentle evening shift, through to Biohacker for the full treatment.
  • Gamma-Curve Dimming: Goes darker than the brightness keys allow without introducing flicker.
  • The Research, Cited: A science page linking the primary literature rather than asking you to take the claims on trust.
  • Native and Small: Written in Swift with no Electron runtime, about a 6 MB download, and no account to create.

Why Sundown?

Night Shift exists because screen colour late at night is worth changing, but it stops at about 2700K, roughly a warm bulb, which is where most people find it stops helping. If you have tried it and gone looking for more, the thing you were looking for is a lower floor and a darker screen, and that is the whole of what Sundown adds.

Pick a Preset

Six of them, from Flow for a light touch to Biohacker for the full shift.

Let the Sun Set It

The schedule follows local sunset and sunrise, so it moves through the year without you editing times.

Go Darker if You Need To

Gamma-curve dimming takes the display below the brightness keys' floor without adding flicker.

Questions

How is this different from Night Shift?

Range. Night Shift's warmest setting is roughly 2700K; Sundown goes to 500K, which is candlelight red, and dims further using the gamma curve.

What is 500K like?

Deep red, much further than a warm bulb. The presets exist so you can choose how far along that range you actually want to go.

Does it need an account?

No.

How big is it?

About 6 MB. It is native Swift with no Electron runtime.

What does it require?

macOS 14 or later.

Is there evidence behind the settings?

The developer publishes a science page citing the primary research rather than summarising it second-hand.

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