Altaflip: Sauna & Cold Tracker
Ice Bath Plunge & Heat Timer
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Track sauna and cold sessions, estimate sweat loss, track HRV, health benefits, follow protocols, and stay hydrated.
Finally, a sauna app that does more than just track time.
Altaflip calculates your sweat loss and tells you exactly how much water to drink after each session. Using research from Finnish sauna studies and peer-reviewed thermoregulation science, the app accounts for body weight, session duration, temperature, and bench level.
SWEAT LOSS & HYDRATION
Estimates your fluid loss based on body metrics, sauna type (traditional, infrared, steam), duration with sweat onset modeling, bench position, and heat acclimatization. Then calculates how much to drink, including electrolyte recommendations for longer sessions.
BENCH LEVEL INTELLIGENCE
Upper bench can be 20 degrees Celsius hotter than lower bench. Select your position and get adjusted calculations.
SAUNA, COLD PLUNGE & CONTRAST THERAPY
Sauna: Traditional, infrared, or steam with temperature and bench level
Cold: Ice bath, cold plunge, cold shower, or outdoor swimming with cold dose tracking
Contrast: Alternating hot and cold rounds tracked as a unified practice
RESEARCH-BASED PROTOCOLS
Built-in protocols from published studies: Finnish Longevity (KIHD cohort, 40% lower all-cause mortality at 4-7 sessions/week), Deliberate Heat, Cold Exposure (Soberg protocol), and Contrast Therapy. Set weekly targets and track compliance.
APPLE HEALTH INTEGRATION
Sessions sync to Apple Health as workouts. Hydration syncs bidirectionally. Heart rate data from BLE monitors flows into Apple Health automatically.
HEART RATE ANALYTICS
Connect any standard Bluetooth heart rate monitor (Polar, Garmin, Wahoo, CooSpo, Scosche) for live HR during sessions. Post-session analytics include estimated calorie burn, thermal load scoring (TRIMP), cold shock response tracking, and heat acclimatization trends. Insights tab shows adaptation charts over time.
HEALTH BENEFITS TRACKING
Five-tier adaptation model (Building to Elite) scores your weekly practice against published research thresholds. Track adaptation timelines for both heat and cold.
SESSION TIMER
Timestamp-based timer that stays accurate when backgrounded or closed. Recovers automatically if interrupted.
DAILY HYDRATION TRACKING
Daily goal adjusts based on body weight plus session deficits. Visual progress ring, quick-add buttons, and weekly trends.
SHARE YOUR ACHIEVEMENTS
Generate styled session cards with stats, sweat loss, and protocol progress. Share to social media or save to camera roll.
SMART NOTIFICATIONS
Session reminders, streak protection, protocol nudges, and post-session hydration reminders. All optional.
WORKS OFFLINE
All data stored locally. No account required.
OPTIONAL CLOUD BACKUP
Sign in with Google or Apple to back up and restore across devices.
FREE FEATURES
Session logging, sweat estimates, basic streaks, session timer, history, one protocol, social sharing
PREMIUM UNLOCKS
Multiple protocols, contrast tracking, hydration tracking, detailed trends, health benefits, heart rate analytics, Apple Health sync, cloud backup, hydration reminders, screen dimming
Start with a 14-day free trial of all premium features.
Terms of use - https://www.altaflip.com/terms-of-service
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved: Full Session History
- Sessions tab now shows your full history, not just the last 30 days.
- New "Show older sessions" button at the bottom loads more in pages of 50 so the list stays fast.
Improved: Sauna & Cold Types at a Glance
- Each sauna subtype now has its own icon and colour in the history list — flame for Traditional, sun for Infrared, cloud for Steam Room.
- Cold sessions do the same — snowflake for Plunge, showerhead for Cold Shower, pool for Outdoor Dip.
- Labels updated to match (e.g. "Traditional Sauna", "Steam Room", "Cold Shower").
New: Edit Session Duration
- Forgot to stop the timer? You can now adjust a session's duration from the session detail screen.
- Sweat loss and hydration estimates recalculate automatically when you change the duration.
- Available for sauna and cold sessions (contrast sessions still use per-phase durations).
New: Live Activities (iOS)
- Your active session now shows on the lock screen and Dynamic Island — glance without unlocking to see elapsed time, phase, and live heart rate.
- The timer ticks natively even when the screen is locked, so elapsed time is always accurate without draining the battery.
- Live heart rate updates when a Bluetooth monitor is paired.
- Contrast sessions show the current phase (Hot / Cold) and round counter.
- Pause or resume from inside the app and the lock screen reflects it instantly.
- Tap the Live Activity to jump straight back to your session.
The developer, Zen Zero Pty Ltd, 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 Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Location
- Contact Info
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Zen Zero Pty Ltd
- Size
- 61.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Premium Lifetime $79.99
- Premium Yearly $29.99
- Premium Monthly $4.99
- Copyright
- © Zen Zero Pty Ltd