HRV4Training vs zimetrix

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

Zimetrix turns any bar, rack, ring or floor into a strength lab. It is a smart isometric dynamometer the size of a remote that, together with this app, shows you your real strength in kilograms after every session. What gets measured gets improved. Stop programming loads from a 1RM you estimated three months ago and start training with real data from this week. HOW IT WORKS 1. Anchor the device to any fixed point (bar, rack, ring, strap or floor). Under 30 seconds. 2. Pull or push at 100% for a 5-second isometric test. 3. Analyze your results instantly in the app. WHAT IT MEASURES • Max force in kg, clinical-grade precision • RFD (explosiveness): how much force you produce in 100, 200 and 300 ms • Force-time curve for every rep • Bilateral symmetry: left vs right difference, in % • Isometric endurance: how long you hold near your max WORKS WITH 30+ TESTS Deadlift, squat, bench press, row, overhead press, pull-ups, curls, hand grip, rotators and many more. WHO IT IS FOR • Serious athletes: catch plateaus and asymmetries before you lose months (or get injured). • Trainers and coaches: back every decision with objective data and track your athletes. • Physiotherapy and rehab: quantify side-to-side deficits and progress. THE APP • Pair with the device in 2 seconds by scanning a QR code • Every measurement saved forever and synced to the cloud • Unlimited history and clean charts of real, not estimated, progress • Compare by session, by side and over time • Available in English, Spanish and Catalan • Sign in with Apple or Google Three minutes per session. Data that used to require a high-performance lab. Use it once a week like a scale, but for real strength, power and explosiveness. Note: Zimetrix requires the Zimetrix dynamometer device to take measurements. Usage terms (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/