Cold Mastery
Ice Bath & Plunge Tracker
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Start your cold exposure journey — free for 7 days. Track sessions, build streaks, and watch your body adapt with live heart rate monitoring.
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
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved heart rate display: The HR curve in session details now renders fully, and peak and average heart rate are calculated correctly. Unreliable readings during the first few seconds are now filtered automatically.
The developer, Fabian Weiss, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Fabian Weiss
- Size
- 16.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pro Monthly $4.99
- Pro Yearly $29.99
- Pro Lifetime $49.99
- Copyright
- © 2026 Fabian Weiss