Correlate vs Koffee

Track habits, mood, health, and daily patterns in one private journal. Define your own trackers: sleep, mood, coffee, symptoms, exercise, medication, productivity, or anything else. Log each day with a tap, then explore your history with charts, notes, search, and PDF reports. Because every tracker is customizable, Correlate works equally well as a habit tracker, mood tracker, symptom log, sleep journal, or medication log - adapting to your routine instead of forcing your life into a preset template. Over time, Correlate helps you spot trends, answer questions, and get a clearer view of what has actually been happening in your life. • Create custom trackers with toggles or sliders • Record events the moment they happen; Correlate opens fast enough that it never feels like a chore • Add daily notes for a private journal • Explore your history with interactive charts you can zoom and pan • Search your data to find patterns and trends • Save PDF reports with graphs, tables, and search results • Sync with iCloud or your own WebDAV server Correlate is designed for sensitive personal data. No ads, no tracking, and no external account required.

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