SurfLab

Surflab is the go-to app for breathing training and freediving. Whether you're
   a surfer, freediver, or simply looking to master your breath, Surflab guides
  you through every session.

  -- WHAT YOU CAN DO --
  
  Pre-Surf Warmup
  22 guided steps (~12 min) to prepare your body and mind before hitting the
  water. Mobility, activation, breathing — arrive at the lineup ready to
  perform.

  Freediving & Breath Hold
  Train your breath hold with guided cycles. Track your records, visualize your
  progress, and beat your personal best.

  CO2 Tolerance Test
  Measure your CO2 tolerance with a simple timed test. Track your progress over
  time and let the app automatically adapt your training to your actual level.

  4-Part Breath Progression
  A 3-minute daily session that automatically adjusts to your CO2 score. The
  smartest progression to push your limits further.

  Power Breathing
  3 rounds of intense breathing to boost your energy and strengthen your immune
  system. Perfect before a surf session or any physical activity.

  Box Breathing
  The Navy SEALs' technique to control stress and stay focused under pressure. 4
   equal counts, a steel mind.

  Heart Coherence
  5 minutes, 3 times a day. Reduce stress, improve sleep, and regulate your
  nervous system.

  Guided Hyperventilation
  Prepare your body for effort with fast, dynamic breathing cycles.

  -- TRACKING & PROGRESS --

  - Personal CO2 score with history and trend
  - Daily streaks to stay motivated
  - Personal breath hold record in real time
  - Full history of all your sessions
  - Progress badges to unlock
  - Global and friends leaderboard
  - iOS Widget: your stats at a glance

  -- SURFLAB PRO --

  - Cosmic Breath: 3 circular cycles + free breath holds (~16 min)
  - CO2/O2 Apnea Tables for serious freedivers
  - Guided training programs (14 to 30 days)
  - Advanced stats and detailed charts
  - Share your sessions on social media
  - AI Coach: personalized advice based on your history and CO2 score
  - 7-day free trial, no commitment

  -- APPLE WATCH --

  Surflab connects to your Apple Watch to measure your heart rate in real time
  during your sessions.

  Start today. Your breath is your greatest strength.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/