ColdLog

ColdLog – Cold Plunge Tracker One tap. One plunge. All the data you need. ColdLog is the simplest way to track your cold plunge and ice bath sessions on Apple Watch. No complicated setup, no unnecessary features – just start your workout and let your Watch capture everything automatically. DESIGNED FOR APPLE WATCH ULTRA ColdLog is built with Apple Watch Ultra users in mind. Use the Action Button to instantly start your cold plunge session – even with wet hands. Add the watch face complication for one-tap access. Water Lock activates automatically when you enter the water. COMPREHENSIVE DATA COLLECTION Every plunge tells a story. ColdLog captures more data than any other cold plunge app: - Water Temperature – Live readings from Apple Watch sensors - Duration – Precise timing of every session - Heart Rate – Continuous monitoring throughout your plunge with detailed graph - Calories Burned – Science-based calculation using cold-induced thermogenesis research - GPS Location – See where you plunge on the map - Weather Conditions – Outside temperature, humidity, and conditions (Pro) - Workout Route – Sessions appear in Apple Fitness with full route SCIENTIFICALLY ACCURATE CALORIE CALCULATION Unlike other apps that guess your calorie burn, ColdLog uses peer-reviewed research on cold water immersion. The formula accounts for water temperature, session duration, your personal BMR, and post-immersion thermogenesis – that "afterburn" effect when your body continues burning calories after you exit. INSIGHTS & ANALYTICS (PRO) Track your progress with beautiful monthly charts: - Time in Water – See your total cold exposure - Temperature Trends – Track how cold you're going - Heart Rate Patterns – Monitor your body's adaptation - Energy Burned – Visualize your calorie expenditure - Cold Stress Score – Measure your overall cold exposure intensity SEAMLESS SYNC Start a session on your Watch, view details on your iPhone. Everything syncs automatically via WatchConnectivity. All data stays private on your devices and in Apple Health – no accounts, no cloud, no tracking. SHARE YOUR ACHIEVEMENTS Finished an impressive plunge? Share a beautiful session card to Instagram, WhatsApp, or anywhere else. The card shows your water temperature, duration, heart rate, calories, weather, and location. KEY FEATURES - One-tap workout start from Apple Watch - Action Button support (Apple Watch Ultra) - Watch face complication for quick access - Automatic Water Lock activation - Timer alerts with haptic feedback (Pro) - Auto-save option for hands-free workflow - Personal notes for each session - HealthKit integration - Celsius & Fahrenheit support - No account required - Offline-first design WHO IS COLDLOG FOR? Whether you're a Wim Hof method practitioner, cold water therapy enthusiast, competitive ice swimmer, or just starting your cold exposure journey – ColdLog helps you track progress and stay consistent. Built by cold plunge enthusiasts who wanted an app that works as simply as stepping into cold water. No bloat. No distractions. Just you, the cold, and your data. FREE TO USE ColdLog is free with all core features – track duration, water temperature, heart rate, calories, and GPS location. History is limited to 3 sessions. Upgrade to Pro for unlimited session history, detailed insights with charts, weather tracking, and timer alerts.