GrayGate

The Weird Canadian

About this app

Take control of your screen with GrayGate — the app that lets you choose which apps appear in grayscale and which stay in full color.

How it works:
GrayGate monitors which app you're using and automatically toggles your display's grayscale mode. Select the apps you want desaturated — like social media or games — and GrayGate handles the rest. When you switch to an app not on your list, full color returns instantly.

Two modes to fit your style:

Blacklist Mode: Selected apps go grayscale, everything else stays colorful
Whitelist Mode: Everything is grayscale except your selected apps
Quick Settings Tile:
Toggle between Auto, Force Grayscale, and Force Color right from your notification shade — no need to open the app.

Important: One-time setup required
GrayGate uses Android's built-in grayscale filter (daltonizer), which requires a one-time permission granted via ADB from a computer. The app guides you through this simple setup during onboarding. No root required.

Privacy first:

Zero data collection
No analytics or tracking
No network requests
No ads
All data stays on your device
Features:

Per-app grayscale control
Blacklist and whitelist modes
Quick Settings tile for instant override
Search and filter your app list
Auto-restart on device reboot
Battery optimization guidance
Material You / Dynamic Color support
Why grayscale?
Some apps are designed with vibrant colors to constantly grab your attention. Grayscale removes the visual noise, giving you a calmer, less distracting screen experience. Choose which apps stay colorful and which ones fade to gray — it's your screen, your rules.

What’s new

Reboot no-op (the big one)
Stuck-gray after process death
Permission UI staleness
Battery
Notifications
Tile cleanup