CaffeTracker

CaffeTracker is a comprehensive health app that helps you understand how caffeine affects your sleep patterns through scientific data analysis.
Key Features:

Easy Caffeine Logging: Quick entry for popular coffee chains (Starbucks, etc.) or custom amounts
Sleep Quality Tracking: Simple insomnia recording with one-tap interface
Statistical Analysis: Uses Welch's t-test to find significant correlations between afternoon/evening caffeine and sleep issues
Beautiful Visualizations: Calendar view shows daily caffeine intake with color-coded sleep quality indicators
HealthKit Integration: Seamlessly syncs with Apple Health for comprehensive wellness tracking
Personalized Insights: Discover your optimal caffeine cutoff time based on your unique data

How It Works:

Log your daily coffee, tea, and other caffeinated beverages
Record whether you experienced insomnia each night
View statistical analysis showing if late-day caffeine significantly impacts your sleep
Adjust your habits based on personalized, data-driven insights

Perfect for coffee lovers, health enthusiasts, and anyone looking to improve their sleep quality through better caffeine management.