HRV4Training vs blueprintHABITS

The first scientifically validated Heart Rate Variability (HRV) app. HRV4Training provides HRV based insights to help you quantify stress, better balance training and lifestyle, and improve performance. HRV4Training does not require a heart rate monitor, since it can accurately assess your HRV using the phone's camera. HRV4Training also works with Apple Watch, the Oura ring and all compatible Bluetooth SMART sensors. HRV4Training is also the first app that goes beyond simple measurements and provides insights on: 1) acute or day to day HRV changes in response to different stressors (alcohol, travel, sick days, training, menstruation, etc.) 2) long term multi-parameter trends to look at the big picture 3) correlations between physiological measurements and annotations 4) training load analysis, fitness, fatigue, readiness to perform and injury risk 5) VO2max estimation for runners linking the app to Strava or TrainingPeaks and using a heart rate monitor during their workouts 6) Training Polarization analysis (or 80/20) 7) Lactate Threshold Estimation for runners linking the app to Strava or TrainingPeaks and using a heart rate monitor during their workouts 8) Weekly and monthly summaries to track progress. All data is processed inside the app in order to provide you with actionable interpretations that can help optimizing your training plan and performance. Supported devices for the camera measurement: iPhones 5, 5S, 6, 6S, 6+, 6S+, SE, 7, 7+, 8, 8+, X, XS, XS Max, XR, 11, 11 Pro, 11 Pro Max, 12 mini, 12, 12 Pro, 12 Pro Max, 13 mini, 13, 13 Pro, 13 Pro Max, 14, 14 Plus, 14 Max, 14 Pro, 15, 15 Max, 15 Pro, 16, 16 Max, 16 Pro Currently unsupported devices for the camera measurement: iPhones 4S, iPads and iPods - These devices require a chest strap. Other features: - HRV-based advice helps you to adapt your trainings based on objective measures of recovery - TAGS: lets you tag your sleep, mental energy, muscle fatigue, stress and all other parameters that can help you understand what is influencing your physical condition and physiological stress - Works with Bluetooth SMART heart rate monitors (a Polar H7 is recommended) or simply your phone's Camera - Integrates with the Health app (writes heart rate, and sleep, read sleep time) - Configurable test (single or orthostatic, choose test duration between 1, 3 or 5 minutes) - Extracts and stores the following features while lying down and/or standing: heart rate, mean of beat-to-beat intervals (AVNN), standard deviation of beat-to-beat intervals (SDNN), square root of the mean squared difference of successive R-Rs (rMSSD), number of pairs of successive R-Rs that differ by more than 50 ms (pNN50), low frequency power (LF, 0.04-0.15 Hz), high frequency power (HF, 0.15-0.40 Hz) - Shows the PPG signal view to ensure signal quality during the test if the camera is used instead of a bluetooth SMART sensor - HRV4T Recovery Points to provide a single, straightforward metric to analyze your physical condition - Population summaries and people like you comparisons to put your data into perspective - Analysis of compliance and consistency - Data export via email or Dropbox - Integrates with TrainingPeaks, Oura, Strava and Coros HRV4Training requires to register an account with your email address, so that your data can be backed up safely and retrieved in case 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. Please find an overview of the relevant scientific literature in our guide, here: https://marcoaltini.substack.com/p/the-ultimate-guide-to-heart-rate

blueprintHABITS is a calm, private habit tracker that helps you show up for the small things — every day, at your own pace. No accounts. No sign-ups. No servers reading your life. Open the app and start tracking. Everything lives on your device and syncs privately through your own iCloud, so your habits, moods, and journal are yours alone. BUILD BETTER DAYS • Track habits your way — yes/no, counts, durations, or ratings • Flexible schedules: daily, specific days, X times per week, or every N days • Count up through the day, one tap at a time, toward a target • A calm daily check-in with a satisfying progress ring • Streaks that understand real life — skip a day, spend a weekly freeze to protect a streak, or mark an honest miss • Swipe to mark done, skipped, or missed — or check off habits with Siri and Shortcuts EVERYWHERE YOU ARE • A home-screen widget with today's ring and habits — tap to check one off • An Apple Watch app and complication to track right from your wrist • Made for iPad, in portrait and landscape SEE YOUR PROGRESS • A month calendar heatmap of your consistency, with mood dots • Per-habit insights: streaks, completion rates, weekday patterns, and charts of what you log • Go back and log days you missed — no pressure, no judgment • Export all of your data anytime REFLECT • Log your mood through the day with a tap • Keep a simple daily journal • Revisit past moods and reflections on your calendar PRIVATE BY DESIGN • Your data is never collected — not by us, not by anyone • Stored on your device and mirrored to your own private iCloud • Optional Face ID / Touch ID app lock • No ads, no tracking, no account required Progress over perfection. Small steps, repeated.