Download

Get CircadianShield

CircadianShield is not a blue-light filter. It is an eye-health and circadian operating layer for screens. Start your 14-day free trial with full Pro features, no credit card required. Founder Pro is $39/year during launch.

macOS

Version 1.0 · 2.5 MB

Download for macOS

What you get

  • Full Pro features for 14 days
  • No credit card required to download
  • 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 1.0 · 3.7 MB

Download for Windows

What you get

  • Full Pro features for 14 days
  • No credit card required to download
  • 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. Start with 14 days of full access, then keep everything with annual or monthly billing.

Pro

Full screen-light control suite for Mac and Windows

$39/yr

Founder pricing during launch. Regular $79/yr.

Monthly available at $9.99/mo.

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