HRV vs VitalTiles

HRV Tracker — private, on-device insights from your iPhone and Apple Watch. Turn heart-rate variability, heart rate, sleep and activity data from Apple Health into clear views of stress, recovery and energy. Track both SDNN and RMSSD, calculated from available beat-to-beat intervals. iPHONE APP • Home dashboard for HRV, Recovery, Sleep Score, Stress, Energy, Activity, heart rate and weight • Today view comparing your day so far with your usual pattern at the same hour • Detailed HRV, Sleep, Activity, Strain and Weight views • Behaviour logging for habits such as alcohol and caffeine • Daily and weekly coaching • Interactive daily, weekly, monthly and yearly charts PERSONAL INSIGHTS Explore which parts of your routine are associated with changes in HRV, sleep, stress and other measurements. • Influences screened against chance • Stronger findings separated from preliminary and descriptive patterns • Combined effects for pairs of behaviours • “Moving Together” comparisons between health metrics • U-shaped relationships • “Compare Everything” matrix and influence explorer • Personal experiments in Labs Insights describe associations; they do not prove cause and effect. TODAY & COACH Compare today’s readings with similar hours from your history. Coaching can consider sleep, recovery, stress, energy, activity and events such as workouts, late coffee or mindfulness. A separate note summarizes the previous seven days. AI-written coaching requires an Apple Intelligence-compatible iPhone running iOS 26 or later, with Apple Intelligence enabled and available for your device language. Other devices retain their scores, insights and standard app-written coaching summaries. Coaching is generated locally; health information is not sent to an external AI service. KEY SCORES Stress — A continuous 0–100 physiological-load score. When both signals are available, it combines 40% HRV with 60% heart rate. It continues with heart rate alone when no nearby RMSSD exists. The curve shades sleep, excludes workouts and identifies missing watch periods. Stress reflects physiological activation, not emotional stress. Energy — An all-day 0–100 estimate of how much you have “in the tank.” It recharges during sleep, taking Sleep Score and sleep stages into account, and responds to calm, stress and physical effort. Compare it with your usual reserve at the same time. Sleep Score — A nightly 0–100 score blending duration (35%), continuity (25%) and restfulness (40%). Restfulness considers overnight HRV, heart rate and physiological load. Scores personalize as your history grows. Recovery — Compares RMSSD with your history at a similar time of day. iPhone uses up to 30 previous days without including a reading in its own reference. Apple Watch uses a shorter local history, so its quick score may differ. Activity — Combines movement with sustained effort. Workout load uses heart rate when enough readings are available; otherwise it is estimated from workout type and duration, so yoga is not treated like intense cardio. The Activity page shows what contributed to the score. APPLE WATCH • Native Recovery and Stress views • SDNN and RMSSD at a glance • Stress and HRV charts • Complications and widgets • RMSSD from available heartbeat series • Support for dense chest-strap readings • Cached baseline for faster opening DATA & PRIVACY HRV Tracker analyzes Apple Health data on your devices. Your health history is not uploaded to an HRV Tracker server. AFib History on a compatible Apple Watch greatly increases beat-to-beat sampling and is strongly recommended for complete RMSSD, Stress, Energy and Recovery views. With infrequent measurements, some curves and insights may remain incomplete. HRV Tracker is intended for personal information and wellness. It is not a medical device and does not diagnose or treat any condition.

VitalTiles puts health data from Apple Health on your Apple Watch as a complication — including the metrics Apple provides no complication for: walking speed, walking steadiness, heart rate recovery, respiratory rate, VO₂ max, wrist temperature, environmental sound and thirty others. On your phone you open a dashboard: your step goal at the top, what matters today below it, and four topics to drill into. Walking — steps, distance, pace, step length, walking steadiness Sleep — duration, deep and REM sleep, respiratory rate, blood oxygen, wrist temperature Heart — resting heart rate, HRV, VO₂ max, heart rate recovery, blood pressure Environment — daylight, environmental sound, UV index, falls Six complications, in every shape your watch face supports: • Health metric — choose which value you want to see • Goals — three daily goals as rings • Streak — how many days in a row you met your step goal • Your energy — how you are doing compared with your own average • Coach — what matters today • Needs attention — automatically shows the metric that stands out On your home screen there are widgets too, up to a tile where movement, sleep and heart run through your week together. In Messages you share your steps in a single tap. Ask Siri for your reading, or put your steps in Control Center. If you use a wheelchair, VitalTiles counts pushes and wheelchair distance instead of steps — just as Apple Health does. A step goal that fits you The 10,000 steps you see everywhere came from a product, not from research: a 1965 Japanese pedometer called the "manpo-kei", literally 10,000-step meter. Recent research shows most of the health benefit is already reached around 7,000 steps. VitalTiles works out a goal based on your age and your current average, and explains where it comes from — citing the research it is based on. Associations from your own measurements After two weeks of wear, the app compares your active days with your quiet days and reports what that does to your sleep and heart rate. Only when the difference is large enough to mean something. Better to report nothing than to present a coincidence as an insight. A report for your doctor A PDF with your name, date of birth, the measurement period, how many data points there are per value, and where the numbers come from — including what a consumer watch can and cannot do. Without interpretation: that is a doctor's work. Thirty-five metrics, explained Every number comes with what it means, what is typical for your age, and what that is based on. No figures without context. What the app does not do • No ads, not even in the free version • At most one notification a day, and never to nudge you • Your health data stays on your device; no account, no analytics service • No account, no sign-in Free and Plus Free forever: all watch face complications, your daily numbers in the app, the step goal, the health signals, and one month of trend history. With Plus: the widgets on your Home Screen, associations from your own data, trends over a year, the doctor's report, the build-up program, working out what moving more would gain you, and notifications. You get two weeks of full access without payment details. Then you decide. Not a medical device. VitalTiles makes no diagnosis and replaces no examination. If you have symptoms, contact your doctor. Terms of Use (EULA): https://ictth.nl/vitaltiles-eula.html Privacy Policy: https://ictth.nl/vitaltiles-privacy.html