Koffee vs Caffeine Tracker

Stop guessing when caffeine leaves your body. Koffee uses a real pharmacokinetic model to show your exact caffeine level in real time — not estimates, not averages. A smooth half-life decay curve tracks every milligram from your morning espresso to your afternoon latte, showing you precisely when you'll be sleep-ready. WHY KOFFEE Most caffeine trackers count milligrams. Koffee shows you the science. The half-life curve visualizes how caffeine metabolizes in YOUR body based on your weight, metabolic speed, and lifestyle factors. Optional cortisol bands show the natural rhythm your body follows — so you can time your coffee for maximum effect. TRACK EFFORTLESSLY - One-tap Quick Log with 10 presets and custom drinks - 50+ branded drinks from Starbucks, Dunkin', Costa, McCafe - Dynamic Island shows your level without opening the app - Home Screen and Lock Screen widgets - Smart Last Call alarm before your cutoff time PROTECT YOUR SLEEP - Real-time countdown to when you're safe to sleep - Sleep Impact Score (0-100) based on caffeine timing and HealthKit data - Sleep Simulator: "What if I skip the afternoon coffee?" - Sleep correlations with HealthKit heart rate and deep sleep data - Personalized cutoff based on YOUR bedtime and metabolism UNDERSTAND YOUR PATTERNS - Caffeine Persona: discover your archetype (Early Bird, Night Owl, Rocket...) - Yearly heatmap with 365 days of caffeine history - Tolerance Tracker with 4-week rolling trends - Weekly Report with actionable insights - Koffee Wrapped: your year in review, shareable PERSONALIZED TO YOUR BODY - 3 metabolic speeds: slow, normal, fast - Body model: weight, smoker, oral contraceptives, pregnancy - Custom daily goals with streak tracking - 16 themes from Oat Milk to Espresso PRICING Free tier includes full caffeine tracking, curve, countdown, Dynamic Island, Quick Log, and 4 widgets. Unlock Koffee Insights for sleep intelligence, deep analytics, premium widgets, and personalization. - Monthly: $1.99/mo - Annual: $9.99/yr (3-day free trial) - Lifetime: $19.99 (one-time, yours forever) No ads. No data selling. Your health data stays on your device. Terms of Use: https://www.koffeecaffeinetracker.app/terms Privacy Policy: https://www.koffeecaffeinetracker.app/privacy

Caffeine Tracker: Caffi helps you understand exactly how caffeine affects your body, your energy, and your sleep. Most people drink coffee on autopilot. Caffi changes that. Log every cup, shot, or energy drink in seconds and watch your personal caffeine curve come to life. See how long your last espresso will keep you wired, when your focus will peak, and the exact moment caffeine stops protecting your sleep. This caffeine tracker is built around your biology, not averages. Caffi calculates your personal half-life based on your habits, age, and weight, then predicts your sleep cliff so you know your last safe drink time every single day. KEY FEATURES - Personal half-life calculation tuned to your body - Sleep cliff prediction so you stop caffeine at the right time - Apple Watch HRV integration for recovery insights - Beautiful caffeine curve showing real-time levels - One-tap logging for coffee, espresso, tea, energy drinks, and more - Custom drinks with your exact caffeine amounts - Streaks to build healthier caffeine habits - Siri Shortcut for instant logging - Home Screen widgets for at-a-glance tracking - Apple Watch app and complications - Apple HealthKit integration - Sleep Loops to protect your nights - Studio and Mixer for personalized tracking - Dark mode and full iCloud sync WHY CAFFI Most caffeine tracker apps just count milligrams. Caffi shows you the curve, predicts the crash, and tells you when to stop. It is the caffeine tracker built for people who care about both performance and sleep. Whether you want to cut back, optimize your morning routine, or simply understand why some afternoons feel different than others, Caffi gives you the data and the clarity to make better choices. CAFFI PRO Unlock the full caffeine tracker experience with Pro: - Unlimited custom drinks - Advanced sleep insights and HRV trends - Full history and export - Premium widgets and complications - All future Pro features included Try Pro free for 7 days. Then $7.99 per year or $14.99 lifetime. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Privacy Policy: https://arytec.ch/privacy Terms of Use: https://arytec.ch/terms