Brain Fog is an iOS app that helps you cut screen time by gamifying your phone's built-in grayscale mode. The idea came from a simple insight — colorful screens are designed to be addictive, and switching to grayscale makes your phone way less fun to mindlessly scroll. The app tracks how long you stay in grayscale each day, visualizes your 'brain health' through an animated mascot, and includes focus sessions to help you build better habits over time.
Key Features
Grayscale Tracking
Monitors how long you stay in grayscale each day and tracks your progress over time.
Brain Mascot
An animated character that evolves based on your screen-time health — the less you scroll, the happier it gets.
Focus Sessions
Dedicated deep work timers that put your phone in grayscale for an allocated amount of time.
iOS Shortcuts Integration
Toggle grayscale via Back Tap with iOS Shortcuts — seamless system-level integration.
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After 1 hour in grayscale — your brain is happier
Calendar view of your daily grayscale progress
Stats page with streaks and screen time breakdown
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Deep work session timer in grayscale mode