


I built Body Vitals - an iPhone health app where the widget IS the product and correlation is the killer feature.
Body Vitals:Health Widgets - Bloomberg Terminal For Your Body
Cross-app health correlations that no single wearable can compute - Garmin + Oura + Strava + MyFitnessPal all feeding one readiness picture.
Here is the problem every health app ignores: Strava knows your run but not your sleep. Oura knows your HRV but not your caffeine. Garmin knows your VO2 Max but not your nutrition. Every app is a silo. Your body is not.
Body Vitals reads from Apple Health - the one place all your apps converge - and surfaces what none of them can individually.
The correlation engine:
The Trends & Correlations screen runs 30-day Pearson-r scatter plots across your actual data:
Sleep hours vs HRV next morning
Mindfulness minutes vs resting HR
Caffeine intake (MyFitnessPal) vs overnight HRV
Training load vs recovery score
Daylight exposure vs sleep quality
One plain-English sentence per pair, computed on-device from YOUR numbers. Not a generic caption. Not a vibe. A real statistical relationship from your life.
And the AI Daily Coaching (Neural Coach) cross-references it all in plain language:
"HRV is 18% below baseline and you logged 240mg caffeine via MyFitnessPal. High caffeine suppresses HRV overnight."
"Your 7-day load is 3,400 kcal via Strava and HRV is trending below baseline. Ease off intensity today."
"VO2 Max of 46 and elevated HRV signal peak readiness. Today is ideal for threshold intervals."
No other app can say any of that because no other app reads from all those sources at the same time.
Everything else that makes it different:
Readiness Radar - five horizontal bars (HRV, Sleep, HR, SpO2, Training Load) showing exactly which dimension drags your score. Oura gives you one number. This shows WHERE the problem is.
Recovery Forecast - slide a sleep target AND planned training intensity to simulate tomorrow’s predicted readiness before you commit.
Five composite scores on the large home screen widget: Longevity, Cardiovascular, Metabolic, Circadian, Mobility - each backed by named peer-reviewed research, each combining multiple HealthKit inputs into a 0-100 number.
Biological Age - computed from VO2 Max, mobility, HRV, sleep consistency.
Zone 2 Tracker - auto-detected from raw HR using San Millan & Brooks (2018). Ignores whatever zones Garmin or Strava assigned.
Acute:Chronic Workload Ratio - Gabbett (2016, BJSM) injury risk bands. Flags when A:C crosses 1.5. Flags undertraining below 0.8.
Allostatic Load - McEwen (1998). A stress-burden index no other consumer app computes.
Menstrual Cycle Phase Intelligence - suppresses false HRV anomaly alerts during luteal phase. That dip is expected. The app knows.
Daily Capacity and Focus Readiness - on-device blends of readiness, sleep debt, HRV, and circadian factors.
Anomaly Timeline (free) - 7 anomaly types with coaching notes: HRV crashes, elevated HR, low SpO2, BP spikes, glucose spikes, low walking steadiness, low daylight.
Neural AI Health Coach (Pro) - conversational, runs via Apple Foundation Models on your iPhone. Ask it anything. Nothing touches a server.
Widget stack (free + Pro) - small vitals gauges, medium sleep/activity/alert widgets, large Health Command Center and Weekly Pattern grid, Apple Watch complications (37 metrics, 2x2 grid, live HR), lock screen, StandBy.
Adaptive readiness weights - after 90 days, the algorithm recalibrates to YOUR signal variance. If sleep is your most volatile metric, it gets weighted higher. Population averages are the starting point, not the endpoint.
Lifetime Deal @ 50% OFF until June 30th.
https://apps.apple.com/redeem?ctx=offercodes&id=6760609127&code=OFF50
Visit https://www.escapethematrix.app for more details.