CaffPulse vs Caffeine Half Life

Track your caffeine intake beautifully and know exactly when it's optimal to sleep. CaffPulse shows you how caffeine moves through your body in real-time with a stunning interactive liquid display that responds to your phone's motion. No more guessing if that afternoon coffee will keep you up at night. WHY CAFFPULSE? Most people have no idea how much caffeine is actually in their system or how long it takes to clear. That 3pm latte? It could still be affecting your sleep at midnight. CaffPulse makes the invisible visible. FEATURES • Beautiful Liquid Display Watch your caffeine level visualized as an interactive liquid container. Tilt your phone and watch it slosh. The color shifts from amber to teal as you approach sleep-safe levels. • Know When to Sleep Get a clear answer: "Safe to sleep at 11:30 PM" or "47mg remaining - winds down in 3 hours." No more wondering. • Personalized to Your Body Set your metabolism speed, or go deeper with factors like age, weight, smoking status, and even genetic CYP1A2 variants. Your half-life, your way. • 70+ Brand Drinks Starbucks, Dunkin', Costa, Peet's, McDonald's and more. Tap your drink, select your size, done. • Streak Goals Set a daily caffeine limit and build streaks. Watch the flame grow as you hit your goals day after day. • Beautiful Charts See your caffeine decay throughout the day. Long-press to scrub through time and predict future levels. • Quick Widgets Log your favorite drinks right from your home screen without opening the app. • Smart Insights Daily tips based on your consumption patterns help you optimize your caffeine timing. DESIGNED FOR - Health-conscious coffee lovers - People optimizing their sleep - Anyone curious about caffeine's effects - Those reducing their caffeine intake Download CaffPulse and finally understand what caffeine is doing to your body.

Caffeine Half Life helps you estimate how caffeine leaves your system over time — so you can make more informed choices about sleep and energy. Highlights - Personalized elimination curve using your profile (e.g. smoking, pregnancy, oral contraceptives) when you choose to provide them - Sleep-readiness estimates based on your bedtime and caffeine threshold — approximate only - Apple Health: optional read/write for dietary caffeine, plus HRV correlation on the chart so you can spot patterns (you control permissions) - Widgets and Apple Watch complications for quick glances — including a trend graph complication - Interactive chart — drag to inspect caffeine levels and HRV at any time of day How it works The app uses a simplified pharmacokinetic model (Bateman equation) to estimate caffeine absorption and elimination based on your personalized half-life. Factors like age, BMI, activity level, smoking, pregnancy, and oral contraceptives adjust the half-life up or down from the ~5-hour population average. Important: This app is for general wellness and educational purposes. It is not medical advice and not a medical device. All estimates are approximate — individual metabolism varies. Consult a healthcare professional for health decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/