BodyEnergy – Body Battery

See your body's energy in real-time. Powered by Apple Watch HRV data. Track stress, sleep & recovery. Privacy-first, no account needed.

Track your energy like Garmin Body Battery — powered by your Apple Watch health data.

BodyEnergy gives you a real-time Body Battery score (0–100) based on your heart rate variability (HRV), sleep quality, stress levels, and daily activity. Understand exactly when you're at peak energy and when you need recovery.

WHY BODYENERGY?

• Science-Based: Uses HRV (SDNN), resting heart rate, respiratory rate, and sleep debt — the same biomarkers used by Garmin, WHOOP, and Oura • Personalized: Baselines calculated from 28–365 days of YOUR data, not population averages • Privacy-First: All processing happens on your device. No account, no cloud, no data selling • Works With Your Tech: Apple Watch, Garmin (via Connect), Oura Ring, WHOOP, Polar — any device that writes to Apple Health

CORE FEATURES

BODY BATTERY SCORE Your personal energy meter updated throughout the day: • Morning wake-up battery level based on last night's sleep • Real-time drain tracking during stress, activity & workouts • Recovery charging during rest and sleep • Garmin-style algorithm with 13 fine-tune parameters

HRV & STRESS MONITORING Science-backed stress tracking using heart rate variability: • Real-time stress level (0–100) from SDNN and heart rate • Statistical (EMA) smoothing for accurate trends • Rest vs. Active vs. Workout context detection • Stress check-in notifications when levels rise

SLEEP ANALYSIS Deep insights into your sleep quality: • Duration, efficiency, and quality scoring • Deep, REM, and light sleep phase breakdown • Personalized sleep recommendations • Smart fallback estimation when detailed data is unavailable

DAILY READINESS SCORE Know if today is a push day or a recovery day: • Combines sleep quality, HRV, resting HR, and stress recovery • Activity-adjusted insights • Personalized coach recommendations

19 SMART NOTIFICATIONS Configurable health alerts with 3-tier interruption levels: • Morning energy briefing with overnight recovery summary • Low battery & high stress warnings • Sleep goal reminders and bedtime nudges • Weekly trend reports • Achievement milestones

70+ ACHIEVEMENTS Track milestones across sleep consistency, activity streaks, heart rate trends, and more.

APPLE WATCH APP Native watchOS companion with 25+ customizable watch face views: • Battery, Activity, Heart, Sleep, Graph, and Specialty views • Complications for quick-glance energy and stress • Home screen widgets

6 LANGUAGES Fully localized: English, Spanish, French, Portuguese, German, Italian.

REQUIREMENTS • iOS 17.0 or later • Apple Watch recommended (Series 4+ for full HRV support) • HealthKit access for health data

PRIVACY Your health data never leaves your device. No accounts. No cloud. No ads. Only anonymous usage stats and crash reporting — never your health information.

BodyEnergy is not a medical device. Consult a healthcare professional for medical decisions.