Unbuzz vs Tazza

Your coffee. Your timing. Unbuzz helps you see how your logged caffeine adds up and how its estimated level changes through the day. Bring a little more intention to your next drink and your evening routine. LOG YOUR USUAL Keep your favourite drinks close and log them in a tap. SEE YOUR CAFFEINE TIMELINE Explore an estimate of your caffeine level over time, alongside your logged drinks. PLAN YOUR TIMING Use your caffeine budget and timing insights to reflect on your routine and plan your last coffee. MAKE SMALL CHANGES Choose caffeine challenges, build streaks, and celebrate your milestones with your Unbuzz companion. Some features require an in-app purchase or subscription. Check the app for available plans. Caffeine levels and timing are estimates. Individual responses vary. Unbuzz does not measure caffeine in your body, predict when you will fall asleep, or provide medical advice.

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.