Zero vs Cold Mastery

Come for the timer, stay for the Tribe. Zero is the first app designed specifically for the cold plunge and ice bath community. Whether you are experienced or taking your first dip, Zero combines smart tracking, heart rate analytics, and an Apple Watch app with a real social network. Smart Ice Bath Timer & Apple Watch: - Apple Watch App: Start and stop your plunge from your wrist or iPhone. - Live Heart Rate: Track your pulse via Apple Watch or Bluetooth chest strap. - Water Type Selection: Choose lake, river, or barrel for precise logging. - Wet-Hand Optimized: Large buttons designed to work with cold fingers. - Audio Guide: Focus on your breathing, guided by ticking and gong sounds. - Apple Health Sync: Automatically save sessions and heart rate as workouts. - Cold Stress Index (CSI) Scoring System: -> Earn a calculated CSI score for every session you log. -> Our formula exponentially rewards extreme cold exposure. -> Collect points, chase records, and compare your best with the Tribe. Join the Tribe: - Social Feed: See where others plunge and give Kudos for motivation. - Leaderboards: Compete with friends and the global community. - Level System: Progress from Beginner to Ice God with your CSI points. Discover Ice Spots: - Global Map: Find barrels, lakes, and river spots shared by the community. - Share Your Spots: Publish your favorite locations for the Tribe. - Filters: Search for wild nature spots or permanent installations. Track Your Progress: - Heart Rate Analytics (Pro): Track cold adaptation, min/max pulse, calm-down rate, and in-plunge heart rate curves. - Profile Statistics (Pro): Track total CSI score, personal bests, and streaks. - History & Sharing: Log water temperature and feeling, and share stylish session graphics. Download Zero today and master the cold. ***EULA*** https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ***Disclaimer*** 1. Assumption of Risk The practice of ice bathing (cold water immersion), breathwork (such as the Wim Hof Method), and related activities involves inherent risks of severe physical injury, permanent disability, and death. These risks include, but are not limited to, hypothermia, cold shock response, heart attack, stroke, loss of consciousness (shallow water blackout), and drowning. By using the "Zero" app and engaging in these activities, YOU VOLUNTARILY ASSUME ALL RISKS, known and unknown, associated with your participation. 2. Mandatory Medical Consultation Cold exposure places extreme physiological stress on the body. You must consult with a qualified physician before starting any cold exposure or breathwork regimen. This is especially critical if you possess pre-existing conditions (e.g., cardiovascular disease, high blood pressure, diabetes, epilepsy, asthma) or are pregnant. Never practice ice bathing if you are under the influence of alcohol or drugs. 3. No Medical Advice The content provided by "Zero" (including timers, guides, community posts, and health data tracking) is for informational, educational, and recreational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. 4. Limitation of Liability To the fullest extent permitted by applicable law, the creators, developers, operators, and affiliates of "Zero" expressly disclaim liability for any direct, indirect, incidental, special, or consequential damages resulting from your use of this app or your practice of cold water immersion. You agree that you are solely responsible for your own safety and well-being. 5. Safety Guidelines * NEVER practice breathwork in or near water. Do breathwork only in a safe place (e.g., on a couch or bed). * NEVER force your limits. Listen to your body. * ALWAYS ensure you have a spotter or are in a safe environment when entering cold water.

Master the cold — one session at a time. Cold Mastery is your guided companion for cold showers, ice baths, and cold plunges. No method dogma, no guru subscription — a precise tool that turns your intention into a daily practice. THE COMPLETE PRACTICE ON iPHONE • Timer with adjustable lead-in and voice coach • Guided breathing exercise (Box Breathing, Power Breathing, and more) before each session • 3 training programs — from beginner to Cold Master • Streak tracking with milestones and daily goals • Temperature tracking for every session • Session history, calendar, and progress charts WITH APPLE WATCH: MEASURED LIVE Wearing a Watch adds the crucial layer — in the shower, in the plunge, and in open water: • Direct access from the watch face — two taps and your session is running • Haptic countdown pulses every 15 or 30 seconds — close your eyes, focus on your body • Live heart rate during the session: see your cold shock response in real time • Recovery phase with HR recovery tracking after the cold • Water Lock for safe wear underwater PROGRESS YOU CAN MEASURE Cold Mastery doesn't just show you how long you lasted — it shows how your body adapts: • Peak heart rate trend: your cold shock response decreases over weeks • Recovery rate: how quickly your heart rate returns after the cold • Endurance: from 15 seconds to Cold Master PROGRAMS THAT CARRY YOU Three evidence-based training programs give your practice structure: • Cold Starter — your entry point with short cold showers • Cold Seeker — increase duration and intensity step by step • Cold Master — for the experienced: ice baths, plunges, and longer exposures YOUR DATA STAYS YOURS • No account required — no profile, no email • No data sent to external servers — your sessions stay on your devices • Private iCloud sync between iPhone and Watch COLD MASTERY PRO The core features with cold showers, timer, and streak are free. Pro unlocks: • All session types (ice bath, cold plunge, open water) • Guided breathing exercise with voice coach • Detailed progress charts (HR trends, recovery rate) • Training programs Not a medical device. Cold exposure carries risks — educate yourself and listen to your body. Not suitable for certain cardiovascular conditions, asthma, or during pregnancy. When in doubt: consult a doctor. Terms of Use (EULA): https://coldmastery.com/en/terms Privacy Policy: https://coldmastery.com/en/privacy