Caffeine App vs Tazza

How much caffeine is still in your body? When can you fall asleep? Are you drinking enough water? Caffeine App gives you the answers — at a glance. Caffeine Tracking • Log every coffee, tea, espresso, energy drink, or mate • Scrollable 24-hour timeline shows your caffeine curve • See how much caffeine is currently in your system • Create custom drinks with individual caffeine amounts • Caffeine calculator for drinks with unusual sizes Optimal Sleep Time • Caffeine App calculates when you're ready to sleep • Get notified when your sleep time is reached • Set your personal caffeine limit and desired sleep time Water Tracking • Track your daily water intake with personalized goals • Save your favorite glass and bottle sizes • Customizable reminders to stay hydrated Statistics • Daily caffeine and water charts across your full history • See which drinks make up most of your caffeine • Compare your water intake against your daily goal Widgets • Caffeine Now: current caffeine level and 30-day history • Water Intake: today's progress towards your goal • Quick Log: log your favorite drink with one tap • Home Screen and Lock Screen widgets Apple Watch • Log caffeine and water right from your wrist • Daily charts for caffeine and water • Complications show your optimal sleep time More Features • Apple Health integration — caffeine and water entries stay in sync • iCloud sync across all your devices • Dynamic Type for optimal readability • URL scheme support

Tazza is the caffeine tracker that actually knows you. Unlike generic trackers that treat everyone the same, Tazza builds a real-time caffeine decay curve personalized to your unique metabolism, factoring in sensitivity, health conditions, medications, and lifestyle. Watch your caffeine level drop in real-time and know exactly when you're sleep-ready. REAL-TIME CAFFEINE CURVE See your actual caffeine level right now — not a guess, but a pharmacokinetic model personalized to you. Watch the curve update live with every drink you log. SLEEP-SAFE COUNTDOWN "You'll be sleep-ready by 9:47 PM." No more guessing whether that afternoon coffee will keep you up tonight. PERSONALIZED METABOLISM Your body isn't average. Tazza adjusts for pregnancy, smoking, contraceptive use, CYP1A2 medications, and your personal sensitivity level. Your curve. Your body. APPLE WATCH Log drinks from your wrist in one tap. Complications show your current caffeine level at a glance. Smart predictions suggest what you'll drink based on time of day and habits. LIVE ACTIVITIES & DYNAMIC ISLAND Your caffeine status lives on your Lock Screen and Dynamic Island — always visible, always current. No other caffeine tracker has this. WIDGETS EVERYWHERE 8 widget types for Home Screen and Lock Screen. Plus a Control Center button for instant logging. 100+ DRINKS BUILT IN Starbucks, Dunkin', Dutch Bros, Peet's, Tim Hortons, Monster, Celsius, Red Bull, and more. Plus create unlimited custom drinks. SMART NOTIFICATIONS Get reminded before your personal caffeine cutoff, warned when approaching your daily limit, and celebrated for tracking streaks. INSIGHTS THAT MATTER (Premium) Full analytics with weekly trends, streaks, and activity heatmaps. Sleep correlation insights show how caffeine affects your rest. Siri Shortcuts let you log hands-free. Free to use with a generous feature set. No subscriptions, Premium is a one-time $6.99 purchase.