價格：免費
檔案大小：6.9 MB
版本需求：需要 iOS 12.2 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Heart Rate Variability measurements recorded by your Apple Watch can give you insight on the stress level your body is under. By using HRV Tracker to track short-term measurements and long-term trends, you can see how your workload during the day, workout sessions or sleeping etc affect your body's readiness, recovery and stress level. Simply put, the higher your HRV is, the better.
***Get Notified***
HRV Tracker makes spotting drops in your HRV easy by monitoring your HRV measurements in the background and showing notifications when your HRV drops under your desired level. You can change the default notification level directly in your Apple Watch app.
***Apple Watch for daily tracking***
Browse through last seven days of HRV measurements by using the digital crown. See how measurements compare to your seven day period and individual days. By tapping the screen you can toggle through the first values of each day. Use complications on your Apple Watch to stay informed on changes in your HRV.
***Follow Long-term trend***
Follow your long-term trend on your iPhone and compare your short term measurements to all-time data. HRV Tracker automatically compares your 24h measurements to all-time data and provides a “health-battery” icon that reflects to your current stress level and readiness.
***Privacy***
Data read from the Apple HealthKit database is only used to show information related to your Heart Rate Variability. Information read by HRV Tracker is only stored and used locally on your iPhone and Apple Watch.
***How is it measured***
Heart rate variability measurements used by HRV Tracker are calculated by measuring the variation between individual heartbeats. Your Apple Watch (Series 3 or later) automatically measures your HRV in the background and stores the outcome into HealthKit. HealthKit uses SDNN heart rate variability, which is calculated using the standard deviation of the inter-beat (RR) intervals between normal heartbeats (measured in milliseconds). Besides background measurements generated automatically by your Apple Watch you can use the Breathe app on your Apple Watch to generate new measurements.
支援平台：iPhone, Apple Watch