Energy & Recovery
Body Battery 0-100
Combines minute-by-minute autonomic stress (HRV) and nocturnal recovery. Recharges during rest and drains under load to give you an instant energy estimate.
SportVitals • 100% On-Device
Advanced physiological metrics. Explained with total clarity.
Decode your daily energy with Body Battery, evaluate recovery with Training Readiness, and optimize workouts with the Banister TRIMP model.
Body Battery 88%
+24 Recharged overnight
TRIMP Load 142
Status: Optimal (ACWR 1.15)
Sleep Score 92
2h 15m Deep & REM
An ecosystem of advanced metrics.
Designed for athletes who want to understand their physiological signals with total transparency and zero monthly fees.
Readiness
Training Readiness
Weighted matrix based on sleep, HRV, acute/chronic workload, and stress history to guide when to push or recover.
Sleep & HRV
Sleep Score & HRV Status
Comprehensive evaluation of sleep duration, deep/REM stages, consistency, and nocturnal HRV status against your 21-day baseline.
Load & Performance
TRIMP Load & ACWR Status
Banister TRIMP model for cardio load per workout, integrated with Acute-to-Chronic Workload Ratio (ACWR) to prevent overtraining.
Core Metrics
A complete set of physiological indicators powered natively by Apple HealthKit.
Body Battery
Combines minute-by-minute autonomic stress and sleep recovery to estimate available energy (0-100). Recharges at rest and drains under load.
Dynamic 0-100 score with continuous charge and drain curves
Stress Level
Uses HRV (RMSSD) and heart rate delta from resting baseline to compute a real-time 0-100 stress score.
Ranges: Rest, Low, Medium, High Stress
HRV & Baseline Status
Robust nocturnal RMSSD calculation, compared against your personal 21-day baseline and classified status (Balanced / Unbalanced / Low).
21-day rolling baseline with physiological bounds
Sleep Score & Architecture
Evaluates duration, sleep efficiency, deep & REM proportions, sleep fragmentation, bedtime consistency, and HRV contribution.
Weighted multi-factor sleep quality assessment
Training Load & TRIMP
Quantifies cardio exertion for every workout using the Banister TRIMP model, tracking Acute Load (ATL) and Chronic Load (CTL).
Foundation for fatigue vs. fitness and injury prevention
Training Readiness
0-100 score derived from a weighted matrix of sleep, HRV recovery, acute/chronic load ratio (ACWR), and stress history.
Levels: Poor, Low, Moderate, High, Prime
Fitness Age & Endurance Score
Evaluates biological fitness age and multi-activity endurance by combining 42-day training load history, resting heart rate, and VO2 max.
Endurance scale 1,000-10,000 with activity breakdown
Race Predictor & VO2 Max
Projects 5K, 10K, Half Marathon, and Marathon finish times based on VO2 max estimate, endurance score, and recent run load.
Predicted race time, target pace, and confidence score
Workout Details
In-depth breakdown of completed activities including Z0-Z5 heart rate zone distribution, active calories, and TRIMP score.
Multi-sport support for running, skiing, cycling, and more
Optimized for iPhone & Apple Watch
A seamless experience across the entire Apple ecosystem.
Native Apple Watch App
Check heart rate zones, training readiness, and Body Battery on your wrist during workouts or via watch face complications.
WidgetKit complications and instant WatchConnectivity sync
Readiness & Wrist Metrics
View real-time physical readiness and recovery scores anywhere at a glance from your Apple Watch.
100% private and computed locally via Apple Intelligence
Live Heart Rate & Workouts
Track live heart rate and instant Z0-Z5 cardio zone distribution during your active workouts on your wrist.
Comprehensive live & post-workout analysis
watchOS 11 • NATIVE
SportVitals directly on your wrist.
Your readiness indicators, live heart rate, and cardio zones always visible during workouts and on watch face complications.
- ✓ WidgetKit complications for your Apple Watch face
- ✓ Ultra-fast native sync via WatchConnectivity
- ✓ Continuous heart rate monitoring & Z0-Z5 cardio zones
Quick Comparison
Why SportVitals offers a unique approach compared to subscription health trackers.
| Feature | SportVitals | Bevel / Athlytic | Whoop / Oura |
|---|---|---|---|
| Pricing Model | Pay once ($9.99) | Subscription ($30-$100/yr) | Subscription ($250-$360/yr) |
| Privacy & Processing | 100% On-Device (Zero Cloud) | Cloud / Partial | Mandatory Cloud Server |
| Algorithm Transparency | Documented in open app repository | Closed proprietary algorithms | Closed proprietary scores |
| Core Metrics & Running | Body Battery, TRIMP, Race Predictor, Hill Score | General Readiness / Strain | General Recovery / Strain |
| Apple Health Integration | Native SwiftData + HealthKit | HealthKit sync | Proprietary cloud sync |