HRV4Training vs sleep² sleeptracker & analysis

The only scientifically validated HRV app that doesn't require an external sensor. HRV4Training helps you optimize your goals by providing tailored feedback on your physical condition and your daily stress response, based on a 1-minute morning measurement. NEW IN 4.0: a complete redesign, with improved usability, new insights and the app now available in English, Italian, Spanish, German, French, Portuguese and Japanese. How it works - Measure for one minute in the morning using your phone camera, a Bluetooth chest strap (a Polar H10 is our recommendation), the Oura ring or Coros watches - Get your HRV and resting heart rate with your normal range, so that you can see what is typical for you - Receive daily advice to adapt your training based on objective measures of recovery - Tag sleep, motivation, soreness, stress, alcohol, travel, sick days, the menstrual cycle and more, to understand what influences your physiology Insights - HRV trends: long-term, multi-parameter trends to see the big picture - Correlations between your physiological data and your annotations - Training load analysis: fitness, fatigue and how you adapt to training - VO2max estimation for runners and cyclists, linking the app to Strava or TrainingPeaks - Training polarization analysis - Weekly and monthly summaries to track your progress Other features - Shows the PPG signal during camera measurements, so that you can check signal quality - Computes heart rate, AVNN, SDNN, rMSSD, pNN50, LF and HF - RR-interval artifact correction - Population summaries and people-like-you comparisons - Data export and integrations with Strava, TrainingPeaks and others - Integrates with the Apple Health app (writes heart rate and sleep, reads sleep time) On compatibility with your phone: the app detects right away if your phone is supported, so that you can always get a refund in case it is not. All data is processed inside the app to give you actionable interpretations. HRV4Training requires an account with your email address, so that your data is backed up safely and can be restored if anything happens (app issue, changing phone, etc.). HRV4Training does not provide medical advice. It is intended for informational purposes only. Consult a medical professional before making health or lifestyle decisions. More on HRV and how to use the app: https://marcoaltini.substack.com Privacy Policy and Terms: https://www.hrv4training.com/privacy--terms.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Discover Sleep Anew: sleep² - Your Sleep Tracker sleep² is your personal guide to better sleep. It combines innovative sleep training with a precise sleep tracker. Sleep trackers provide valuable insights into your sleep. The sleep² Intensive Program is an EU-approved medical device, specifically designed for people with acute sleep disorders like insomnia. Our scientifically based method has already helped thousands improve their sleep quality through systematic and gradual sleep tracking and training. sleep² Pro: Based on sleep analysis, the program adapts to individual sleep data, delivering precise recommendations from your sleep tracker. Sleep Tracker: Analyze sleep using a Polar sensor or import data via Apple Health. Manually enter sleep data into the sleep diary if no tracker is used. Based on the sleep data, you get: Detailed recommendations based on sleep analysis Sleep training for better sleep An interactive chat-bot to help you sleep better Sleep analyses always available—no waiting like in sleep labs Precise sleep analysis through innovative algorithms for sleep improvement Free download & basic functions Full features of sleep² (precise sleep analysis, personalized programs) with subscription purchase Download sleep² - Our sleep tracker and precise sleep analysis help improve sleep! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/