Guide••10 min read
Blue Light Filter for MacBook: Beyond Night Shift (2026 Guide)
Night Shift blocks 40% of blue light on your MacBook. Here's how to reach 97% and what actually worked after testing every option.
The Science of Light & Sleep
Research-backed insights on blue light, screen flicker, and circadian health.
Comparison••11 min read
Best Mac Display Health App 2026: Complete Guide
We tested every Mac display health app across four pillars: blue light, flicker, dithering, and scheduling. Here's the full breakdown.
Comparison••8 min read
Night Shift Alternative for Mac: Why Apple's Built-In Filter Isn't Enough (2026)
Looking for a Night Shift alternative for Mac? Apple caps at 2700K and blocks 40%. Sundown reaches 500K and blocks 97%.
Comparison••9 min read
Sundown vs Iris for Mac (2026): What Happened to Iris and What to Use Now
Iris pioneered PWM flicker protection and deep blue light filtering on Mac. Then it stopped updating in November 2022. Here's how Sundown compares — and what former Iris users should know.
Comparison••10 min read
Sundown vs f.lux for Mac (2026): The Honest Comparison
f.lux blocks 70% of blue light at 1200K. Sundown blocks 97% at 500K. Both filter your Mac screen after dark — but the gap between them changes everything.
Guide••11 min read
Mac Blue Light Filter: What Actually Works Beyond Night Shift
Night Shift blocks 20% of blue light. f.lux blocks 70%. Here's what a real Mac blue light filter looks like — and why depth matters more than you think.
Science••10 min read
Blue Light and Sleep: What Your Mac Display Does to You
Your Mac emits blue light that suppresses melatonin and disrupts sleep. Night Shift helps, but it's not enough. Here's what actually works.
Guide••11 min read
How to Make Mac Night Mode Darker — Beyond Dark Mode
Your Mac has three levels of darkness and most people only use one. Here's how to go beyond Dark Mode and Night Shift to actual circadian protection at 500K.
Guide••10 min read
Red Screen Filter for Mac — Deep Red at 500K | Sundown
Most Mac 'red screen filters' stop at amber. Here's why color temperature matters, what the science says about 500K vs 2700K, and how to set up genuine circadian protection tonight.
Comparison••13 min read
Best f.lux Alternative for Mac in 2026: 6 Options Compared
f.lux pioneered screen tinting in 2009 but hasn't shipped a major update since 2021. Here are six alternatives compared on filtering depth, PWM protection, dithering, privacy, and price.
Deep Dive••10 min read
Display Dithering on Mac: The Hidden Flicker Source Your Blue Light App Won't Fix
Every Apple Silicon Mac flickers at the pixel level through temporal dithering. It's separate from PWM, invisible to most people, and no blue light app except one addresses it.
Deep Dive••11 min read
Flicker-Free Mode for Mac: How Sundown Eliminates PWM Headaches Without Killing Your Brightness
Your MacBook dims its screen by strobing the backlight thousands of times per second. Flicker-free mode stops the strobing and dims through gamma instead. Here's exactly how it works.
Guide••12 min read
How to Reduce Blue Light on MacBook Pro: Every Method from 20%% to 97%%
Most guides stop at Night Shift. This one covers every method to reduce blue light on your MacBook Pro — built-in settings, third-party apps, physical filters, and ambient lighting — with the science behind why depth of filtering matters more than you think.
Guide••14 min read
Fix Screen Flicker Headaches on MacBook: PWM and Dithering Explained
Your MacBook has two invisible flicker sources causing headaches. PWM backlight dimming and temporal dithering. Here’s what they are, which models are affected, and what actually fixes them.
Comparison••8 min read
Night Shift vs f.lux on Mac (2026): Full Comparison
Night Shift caps at 2700K. f.lux goes to 1200K. Neither has flicker-free mode. Here’s the full breakdown — and why serious Mac users are switching to something deeper.
Comparison••12 min read
Best Blue Light App for Mac in 2026: Night Shift vs f.lux vs Iris vs Sundown
We tested every Mac blue light filter app against circadian research. Here's what the specs, the science, and 18 months of testing actually show.