Comparisons

CircadianShield Comparisons

Honest, side-by-side comparisons with every major blue light filter option. No spin, just features, facts, and trade-offs.

Best Blue Light Filter Apps for Mac 2026

Ranked and reviewed: CircadianShield, f.lux, Night Shift, Iris, Shifty, NightTone, Lunar, and LookAway compared across 12 key features.

f.lux is free and trusted, but has not been updated since June 2023. See what you are missing in a side-by-side comparison.

Night Shift is a good start, but it is one slider from 2017. What is missing and why it matters for your sleep and circadian health.

The two free Windows options side by side: presets, schedules, full-screen games, work licences and fixes, plus when a paid app is worth it.

Does the f.lux blue light filter really work? f.lux, Iris and CircadianShield compared on filtering, 2026 prices, Mac and Windows.

Iris pioneered PWM flicker control, but development stalled in 2022. Is it still worth buying? Full honest comparison.

Every Iris licence and subscription against CircadianShield Core and Pro, with device limits, update terms and what each costs after four years.

They are not competing, they are complementary. What each does, what each misses, and how to use both together effectively.

LookAway is the best break timer on Mac. But it has zero blue light filtering. A full feature and pricing comparison.

Twilight is an Android-only red filter overlay. How it works, what it lacks, and what Mac users can use instead.