Erkan

Erkan turns the data your iPhone and Apple Watch already collect into three clear scores, each measured against your own rolling baseline instead of a population average. Your normal is the reference point. A resting heart rate of 58 means something different for you than for someone else, so Erkan learns your usual ranges and shows how today compares. RECOVERY A 0 to 100 score built from your heart rate variability, resting heart rate, sleep and recent load. Every number shows how far it sits from your usual, so you can see why the score moved. STRAIN How much load your day has carried, on a 0 to 100 scale tuned to your own history. Each morning you get a target range set by your recovery, so you know whether there is room for a hard session or a lighter day makes more sense. SLEEP Duration, efficiency and time in deep and REM sleep, with your sleep window, bedtime consistency and the sleep debt from the last seven nights. STRESS AND RESERVE Daytime stress from heart rate and HRV against your baseline, and an energy reserve that charges with sleep and recovery and drains with strain and stress. Erkan shows exactly what charged it and what drained it. HEART AND VITALS Resting heart rate, HRV, breathing rate, blood oxygen and daytime heart rate, each marked as usual, above or below your usual range. Blood pressure, blood glucose and cycle data appear when they are in Apple Health. TRAINING A month calendar of endurance, strength and mobility days, workout details with heart-rate zones, and a weekly view of minutes and sessions. LOG WHAT MATTERS Log meals by search, barcode or a quick estimate, add journal factors such as caffeine, alcohol or late meals, and keep blood results in one place. Over time, Erkan shows which habits line up with better recovery. TRENDS 14, 30 and 60 day views of recovery, strain, HRV, resting heart rate, sleep and steps, with your average marked on each chart. ON YOUR WRIST AND HOME SCREEN An Apple Watch app shows recovery, strain and sleep at a glance, and a widget keeps today's scores on your Home Screen. HOW IT WORKS Every score is explained in the app: tap "How it's scored" to see the inputs and how each one compares with your usual. A new baseline takes about two weeks of data to settle; scores are marked as calibrating until then. PRIVACY Erkan reads health data from Apple Health only with your permission. Your data is used to calculate your scores, is never sold and is never used for advertising. You can delete your account and data from Settings. Erkan is for general wellness and fitness. It is not a medical device and does not diagnose, treat or prevent any condition. Talk to a doctor about any health concern. Erkan is for adults aged 18 and over. An Apple Watch is recommended for heart rate variability, sleep stages and daytime heart rate.