Half-Life

Half-Life - Know Exactly How Much Caffeine is Affecting You Right Now Ever wonder if that afternoon coffee will keep you up tonight? Half-Life shows exactly how much caffeine is affecting you right now—not just how much you drank—using real-time half-life calculations. Plus, track your sugar intake alongside caffeine to monitor both. Check your levels with a glance at your Apple Watch. WHO IS THIS FOR? You'll love Half-Life if you: • Want to know when that last coffee is safe without affecting sleep • Need to avoid crashes during important meetings • Want to optimize timing for workouts or focus • Want to monitor both caffeine and sugar intake from your drinks • Struggle with sleep and suspect caffeine timing • Need help staying within healthy limits • Are sensitive to caffeine before bedtime WHAT YOU CAN DO: See Your Level Instantly - Glance at your watch to see active caffeine levels and daily sugar intake. Beautiful fuel gauge with colors: green low, yellow moderate, orange high, red excessive. Always visible through widgets and complications. Know When It Wears Off - Never wonder if espresso will keep you up. Half-Life calculates exactly when caffeine wears off so you can plan accordingly. Avoid nights lying awake. Track Daily Intake - Set your personal daily limits with visual progress bars. Track both caffeine and sugar intake side-by-side. Monitor your sugar consumption from all your drinks while tracking active caffeine levels. Know before that next cup if you're approaching your limits. Log Drinks Fast - Tap three customizable presets for instant logging. Or browse 20+ pre-loaded beverages. Create custom drinks with personalized amounts. Match Your Metabolism - Everyone's different. Adjust your half-life setting to match how quickly your body processes caffeine. Adapts to your unique body chemistry. See Decay Over Time - Visualize how levels decrease with interactive charts. See history and understand patterns. Beautifully displayed on your watch. PRIVACY YOU CAN TRUST Your health data stays yours. Everything stored locally on your Apple Watch—no cloud, accounts, tracking, or collection. Never leaves your device. Works offline. Complete privacy. SCIENTIFIC ACCURACY Based on Sleep Foundation and medical research: • Average half-life varies by individual • Effects typically last several hours for most people • Experts recommend avoiding caffeine several hours before bedtime • Helps you stay within recommended healthy limits Drink database includes researched amounts for coffee, tea, soda, energy drinks—based on standard servings and medical research. EASY SETUP Add widgets to watch home or complications to watch face. Customize presets, set limits, adjust metabolism. Then tap to log and glance at your watch. Simple. WIDGETS: Long press home screen, tap "+", search "Half-Life", choose style. COMPLICATIONS: Watch app → Face Gallery → choose face → tap slot → select "Half-Life". BETTER SLEEP AND SMARTER CHOICES Understanding caffeine effects helps you: • Plan coffee timing for better sleep • Avoid crashes at worst moments • Optimize for peak performance • Stay within healthy limits • Make informed decisions No more guessing. Accurate real-time information right on your wrist. Whether you're a coffee enthusiast, energy drink consumer, or want to understand your caffeine and sugar intake better, Half-Life gives insights to take control. Download Half-Life today and discover how much caffeine is affecting you right now, and keep track of your sugar consumption too.