Best f.lux Alternatives for Mac in 2026: 6 Apps Compared

What f.lux does well

Credit where it's due. f.lux has been around since 2009 and essentially created the category of automatic screen warming. Before Apple added Night Shift, f.lux was the only way to reduce blue light on a Mac.

Its core feature is colour temperature adjustment. It shifts your display towards warmer tones as the sun sets, using your location to calculate solar timing. It supports aggressive filtering down to 1200K, well beyond what Night Shift offers, and the transitions are gradual enough that you barely notice them happening.

f.lux still works. It runs on macOS Sequoia and does its primary job reliably. If all you need is colour temperature shifting, it remains a viable option.

Why people look for alternatives

f.lux solves one problem well. But screen comfort in 2026 involves more than just colour temperature. Here's what brings people to search for alternatives:

• No dark mode control. f.lux does not toggle macOS dark mode. It only changes colour temperature. You need a separate tool (or manual switching) to manage your appearance.
• No wallpaper sync. Your wallpaper stays the same regardless of whether you're in light or dark mode.
• Dated interface. The UI has not been significantly refreshed in years. It does not feel native to modern macOS.
• Data collection. The f.lux privacy policy mentions collecting geolocation and usage data. For a utility that runs persistently, this matters to some users.
• Only colour temperature. f.lux addresses one dimension of screen comfort. It does not manage screen luminance through dark mode or adapt to weather conditions.
• No custom scheduling beyond solar. You can set the colour temperature curve, but you cannot schedule dark mode at a specific time or offset from sunset.

If any of these matter to you, it's worth looking at what else is available.

Night Shift (built-in)

The most obvious alternative is already on your Mac. Apple introduced Night Shift in macOS Sierra, and it handles basic colour temperature shifting without installing anything.

What it does

• Shifts display colour temperature towards warmer tones on a schedule.
• Supports sunset-to-sunrise scheduling or custom start/end times.
• Adjustable warmth slider (though the range is more limited than f.lux).
• Zero configuration needed beyond flipping the toggle in System Settings.

Limitations

• Limited warmth range. Night Shift cannot go as warm as f.lux. The lowest setting is noticeably less aggressive than f.lux at 1200K.
• No dark mode control. Night Shift only adjusts colour temperature. Dark mode switching is handled separately in Appearance settings.
• No per-app control. You cannot disable Night Shift for specific apps like photo or video editors.
• No advanced features. No wallpaper sync, no weather awareness, no keyboard shortcut.

Solace

Solace is a macOS menu bar app that combines appearance switching, colour temperature, and wallpaper management in a single tool. It is the only app on this list that handles all three.

What it does

• Dark mode scheduling. Solar-based (follows your actual sunrise and sunset), custom times, or weather-aware switching that adapts to cloud cover and conditions.
• Evening warmth. Built-in colour temperature control that gradually warms your screen in the evening, independent of Night Shift.
• Wallpaper sync. Set a different wallpaper for light mode and dark mode. They switch automatically with your appearance.
• Keyboard shortcut. Toggle your appearance instantly from anywhere.
• Privacy-first. No accounts, no analytics, no telemetry. Location data is processed on your device. The privacy policy is short enough to read in under a minute.

What makes it different

Solace is the only macOS app that combines dark mode scheduling with colour temperature control and wallpaper syncing. With every other option, you need to run multiple tools to get the same result. It also has weather-aware switching, a feature no competitor offers. If the sky goes dark at 2 PM during a storm, Solace can switch to dark mode early.

• Price: $4.99, one-time purchase. No subscription.
• Requirements: macOS 13 (Ventura) or later.

Nightfall

Nightfall is a free, open-source utility focused on one thing: giving you a fast way to toggle and schedule macOS dark mode. It does this cleanly and without unnecessary complexity.

What it does

• Toggle dark mode via a menu bar icon or keyboard shortcut.
• Schedule switching at sunrise/sunset or at custom times you define.
• Minimal interface. Stays out of your way.

Limitations

• No colour temperature control. Nightfall does not adjust screen warmth. You would still need Night Shift or another tool for that.
• No wallpaper sync. Your wallpaper does not change with your appearance.
• No weather awareness. Switches on a fixed schedule only.

Nightfall is a solid choice if all you want is a dark mode toggle with scheduling. It's free, open source, and actively maintained (v3.1, August 2024).

Shifty

Shifty is a free, open-source companion app for Night Shift. Rather than replacing Night Shift, it adds the controls Apple left out.

What it does

• Per-app control. Disable Night Shift for specific apps. Useful if you do photo editing or colour-critical work and want accurate colours in certain apps while keeping warmth everywhere else.
• Keyboard shortcut. Toggle Night Shift on or off without opening System Settings.
• Schedule tweaks. Fine-tune when Night Shift activates beyond the basic system options.
• Disable for specific websites. Handy for web-based design tools.

Limitations

• Does not control dark mode. Shifty only manages Night Shift. Dark mode switching is handled separately.
• Tied to Night Shift's warmth range. You get more control over when Night Shift runs, but not a wider colour temperature range.
• No wallpaper sync. Not part of its scope.

Shifty has over 1,300 stars on GitHub and is actively maintained (v1.2, October 2024). If Night Shift is almost enough for you but you want per-app control and a shortcut, Shifty fills that gap well.

Umbra

Umbra focuses on wallpaper management tied to your Mac's appearance. It lets you assign different wallpapers to light and dark mode, and switches them automatically.

What it does

• Set separate wallpapers for light mode and dark mode.
• Automatically switches wallpapers when your appearance changes.
• Clean, native-feeling macOS interface.
• Actively maintained (v1.5, February 2026).

Limitations

• No colour temperature control. Umbra does not warm your screen.
• No dark mode scheduling. It responds to appearance changes but does not trigger them. You still need macOS Auto or another scheduler to control when dark mode activates.
• No weather awareness. Wallpaper changes are tied to appearance, not conditions.

Umbra is a good fit if wallpaper management is your primary concern and you're happy with macOS's built-in dark mode scheduling.

macOS Auto (built-in)

The simplest option. macOS has included automatic dark/light mode switching since Mojave. Set it to Auto in System Settings and your Mac follows the sun.

What it does

• Switches to light mode at sunrise and dark mode at sunset based on your location.
• No installation required. Built into macOS.
• Works reliably for most users most of the time.

Limitations

• No custom times. You cannot set dark mode to start at 7 PM. It follows the sun, period.
• No colour temperature. Appearance switching only. You need Night Shift separately for screen warming.
• No wallpaper sync. Dynamic wallpapers exist but you cannot assign arbitrary images to each mode.
• Sometimes unreliable. Users on macOS Sonoma and Sequoia have reported Auto appearance getting stuck after sleep, requiring a manual toggle to unstick it.

Comparison: all options side by side

Which one should you choose?

It depends on what matters most to you. Here's a quick decision framework:

• Just want a warmer screen at night? Use Night Shift. It's free, built into macOS, and requires no installation. Good enough for most people.
• Want better Night Shift control? Add Shifty. It gives you per-app settings and a keyboard shortcut for Night Shift, without replacing it.
• Just want a dark mode shortcut and schedule? Try Nightfall. Free, open source, and focused on doing one thing well.
• Want wallpaper switching tied to dark mode? Look at Umbra. It handles wallpaper management cleanly, though it does not control when dark mode activates.
• Want everything in one app? That's Solace. Dark mode scheduling, colour temperature, wallpaper sync, weather awareness, and a keyboard shortcut. One menu bar app, zero data collection.

There's no single right answer. The best choice depends on how many separate tools you want to manage and which features actually matter to your workflow.

Frequently asked questions