Download

Get CircadianShield

CircadianShield is not a blue-light filter. It is an eye-health and circadian operating layer for screens. Buy once for $47, unlock every Pro feature on up to 3 computers, and try it risk free with a 14-day money-back guarantee.

macOS

Version 1.1.0 · 3.8 MB

Buy CircadianShield Pro, $47

What you get

  • Every Pro feature with your license key
  • License key and download link arrive by email right after purchase
  • Notarized by Apple

System Requirements

  • macOS 14.0 (Sonoma) or later
  • Apple Silicon (M1/M2/M3/M4) or Intel
  • 64 MB RAM · 25 MB disk space

Windows

Version 1.1.228 · 11 MB

Buy CircadianShield Pro, $47

What you get

  • Every Pro feature with your license key
  • License key and download link arrive by email right after purchase
  • x64 installer included

System Requirements

  • Windows 10 or later
  • x64 processor
  • 64 MB RAM
  • 25 MB disk space
Installation

Up and running in 3 steps

1

Download & Open

Download the installer for your platform and open it. On macOS, drag CircadianShield to Applications. On Windows, run the setup file.

2

Grant Permissions

On first launch, allow Accessibility access so CircadianShield can apply the display overlay.

3

Set Location

Choose a city preset or auto-detect your coordinates. CircadianShield starts adjusting your display immediately.

Pricing

Choose your plan

One Pro plan, one payment. No subscription, free updates, and a 14-day money-back guarantee.

Pro

Full screen-light control suite for Mac and Windows

$47 one-time

One payment covers up to 3 computers. No subscription.

14-day money-back guarantee. Full refund if it is not for you.

Includes

  • All 11 display modes (Auto, Reading, Coding, Gaming, Biohacker…)
  • Light dashboard & light debt tracking
  • Ambient soundscapes
  • PWM flicker protection
  • Per-app display profiles
  • Priority support

14-day money-back guarantee. Contact support