Best f.lux Alternatives for Mac in 2026

f.lux has been the default answer to "blue light filter for Mac" for over a decade. But it’s not the only option anymore — and for many Mac users, it’s no longer the best one. If you’re looking for something lighter, more native, or simply more modern, here are the best f.lux alternatives in 2026.

Why Look for an f.lux Alternative?

f.lux still works, but the most common complaints haven’t changed in years:

• It’s another background app managing your screen color, when macOS already has a built-in way to do the same job.
• The UI feels dated next to modern macOS apps.
• It can conflict with color-critical work like design and photo editing.

Meanwhile, macOS ships with its own screen-warming feature — Night Shift — with nothing extra to install. Its only real flaw is that Apple won’t let you keep it on all the time. That flaw shapes this entire list.

1. Night Shift + Night Shift Keeper — Best Overall

The single best f.lux alternative isn’t a third-party filter at all: it’s the native Night Shift engine already built into your Mac, made persistent with Night Shift Keeper.

Night Shift warms the display inside macOS’s own display pipeline — no overlay, no tint, no third-party color engine. Night Shift Keeper is a small utility that fixes its one flaw: it keeps Night Shift active 24/7, re-enabling it instantly after sleep, restarts, and macOS’s automatic sunrise cutoff.

• How it warms the screen: Apple’s own Night Shift — same look, same warmth slider.
• Persistence: Stays on through sleep, reboots, and schedule resets — the thing people actually install f.lux for.
• Price: Free to download; the Always On feature unlocks with a one-time license. No subscription.

If your reason for using f.lux is "I want a warm screen all the time," this combination gives you exactly that without replacing the built-in feature. See our full f.lux vs Night Shift comparison for the head-to-head details.

2. Native Night Shift Alone — Best Free Option

If you only want a warm screen in the evenings, you may not need to install anything. Night Shift is already on your Mac: System Settings → Displays → Night Shift. Set a custom schedule and adjust the color temperature slider.

The catch: macOS turns it off at the end of your schedule, and it can reset after sleep or a restart. There is no native "always on" switch — if you want one, you’re back to option 1. Our guide on keeping Night Shift on all the time covers the workarounds and their limits.

3. Iris — Most Features

Iris is the power-user option. Beyond color temperature, it handles software brightness below the hardware minimum, a flicker-related setting, and preset modes for different times of day.

The trade-offs: it’s paid (check the developer’s site for current pricing) and has far more settings than most people need. It makes sense if you want to tune everything — overkill for everyone else.

4. Dimmer & Minimal Brightness Apps

Apps like Dimmer reduce screen brightness below the hardware minimum using a dark overlay. They don’t shift color temperature at all — so they’re not a true f.lux alternative on their own, but they pair well with Night Shift for late-night use in dark rooms.

5. macOS Color Filters — Free and Permanent

macOS has an accessibility tint that never turns off: System Settings → Accessibility → Display → Color Filters → Color Tint. Choose an amber color and turn the intensity down. It’s free, but it’s a flat tint rather than a true warmth shift, so whites look muddier than with Night Shift or f.lux.

How to Choose

• You want f.lux’s always-on warmth using the built-in feature: Night Shift + Night Shift Keeper.
• You only want evening warming and zero cost: native Night Shift with a custom schedule.
• You want every dial and don’t mind paying: Iris.
• You want a free tint that never turns off: Color Filters.
• Your screen is too bright at night, color aside: add Dimmer.

For the head-to-head and a full comparison table, see f.lux vs Night Shift vs other blue light apps on Mac.