Bio vs Koffee

Still wired at midnight? Bio-Rhythm is the science-based caffeine tracker built for people who refuse to trade tomorrow's sleep for today's coffee. Every coffee, tea, or energy drink you log is plotted on a real-time decay curve based on your personal metabolism. You'll see exactly how much caffeine is still in your system — and exactly when it will be safe to sleep. — PROTECT YOUR SLEEP — Get a precise countdown to your safe-sleep time. No more guessing whether that 3pm latte will haunt you at 1am. — TRACK CAFFEINE IN REAL TIME — Watch your caffeine level rise and fall on a beautiful decay chart, powered by the same exponential half-life formula used by sleep scientists. — SCORE YOUR SLEEP READINESS — Get a daily Bio-Rhythm Score from 0–100. Build streaks of "perfect nights" and see your 7-day trend at a glance. — LOG ANY DRINK IN SECONDS — 27+ preloaded beverages — espresso, americano, matcha, Red Bull, Monster, 5-Hour Energy, Coke and more. Or add your own custom drink. — HIT YOUR FOCUS ZONE (Premium) — Smart dosing recommendations tell you exactly when to drink your next coffee for peak focus — and when to stop so your sleep is protected. — BUILT FOR BIO-HACKERS — Premium unlocks custom half-life (1–12 hours) and sleep sensitivity threshold (0–100mg) so the math matches your body, not an average. — PRIVATE BY DESIGN — All your data stays on your device. No accounts, no cloud, no tracking. Stop sabotaging your sleep. Start tracking with Bio-Rhythm. — PREMIUM — Bio-Rhythm Premium unlocks: • Custom caffeine half-life • Custom sleep threshold • Focus Flow dosing recommendations • Ad-free experience Bio-Rhythm is free to download and use. To unlock the full "Bio-Hacker Engine," we offer three auto-renewing subscription options: Weekly Espresso: $1.99 per week Monthly Steady: $5.99 per month Yearly Bio-Hacker: $29.99 per year (Best Value) Privacy : https://cofeetracker.xn--hn-vrab.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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