CaffeineLog
Smart Caffeine Tracker
Know exactly how much caffeine is in your system
CaffeineLog uses half-life decay modeling to track your caffeine metabolism in real time. Log your drinks, see your current caffeine level drop over hours, get sleep-readiness estimates, and review weekly patterns — all without your data ever leaving your phone.
Real-Time Caffeine Levels
See your current caffeine level updated in real time using half-life decay modeling. Know exactly how much caffeine is still in your system at any moment.
Sleep Recommendations
Get personalized sleep-readiness estimates based on your current caffeine level. CaffeineLog tells you when your body will be ready for quality sleep.
Beverage Database
Choose from a built-in database of popular beverages including coffee, tea, energy drinks, and sodas. Each entry includes accurate caffeine content.
Weekly Analytics
Review your caffeine consumption patterns with weekly charts and trends. Identify habits, track daily averages, and monitor your intake over time.
Smart Notifications
Receive timely reminders when your caffeine level drops or when it's safe to sleep. Stay informed without constantly checking the app.
100% Private & On-Device
All data stays on your iPhone. No accounts, no cloud sync, no tracking. Your caffeine habits are nobody's business but yours.
Perfect for mindful caffeine consumers
Coffee lovers who want to optimize their intake
People sensitive to caffeine seeking better sleep
Athletes monitoring pre-workout caffeine timing
Anyone curious about their daily caffeine patterns
Health-conscious users reducing caffeine gradually
Take Control of Your Caffeine
Real-time caffeine tracking, sleep recommendations, weekly analytics — all on-device and completely private.
Requires iPhone with iOS 17.0 or later
Coming Soon on the App Store