defog: Beat Brain Fog

Defog is an iOS app that helps people with persistent brain fog figure out what's behind it. Users do a quick daily check-in (sleep, meals, caffeine, stress, screen time, exercise, hydration, supplements), the app detects patterns, suggests small experiments, and delivers a Weekly and Monthly Insight Report. Native SwiftUI, RevenueCat subscriptions (yearly with 7-day trial, quarterly, monthly), hard paywall, custom brand identity.