Body Battery (0–100)
Real-time energy score with an arc gauge and 24-hour timeline: sleep recharges, stress and activity drain. Breakdown cards for sleep recharge, stress drain, activity drain, and trend.
iPhone & Apple Watch
Four scores. One clear picture of how you feel.
Apple Health stores the raw data; it doesn’t spell out what it means for today. Your Body Battery does — four answers you can actually use.
The app reads the same information already in Apple Health and distills it into real-time energy, sleep quality, stress, and daily strain: what matters for planning your day, with charts, trends, and optional nudges. No extra accounts — everything stays on your device.
iPhone (primary) · Apple Watch companion app & complications · Requires Apple Health data
Built for people who already track health on Apple Watch
The Health app is a vault of numbers and charts — useful, but rarely prescriptive. Your Body Battery sits on top of that same Apple Health data and tells you what you need to know: recovery, sleep, stress, and training load in one place, with a fast mirror on Apple Watch — so you can decide whether to push hard or protect recovery, without shipping vitals to another company’s cloud.
Wake up with context: how recovered you are, how last night’s sleep sets today’s strain target, and where stress crept in between meetings and workouts — not another wall of raw samples.
It’s a calm read on energy, sleep quality, nervous-system stress, and daily load — tuned to you with rolling baselines, optional on-device notifications, and explanations when you want to go deeper.
Everything the app does
Where Apple Health shows what was recorded, Your Body Battery shows what it implies — a native iPhone app with a companion watch experience. Here’s the full feature set, from scores to settings.
Sleep analysis
Sleep score from your longest session: stages hypnogram, overnight heart rate, HRV, respiratory rate, efficiency, heart-rate dip, consistency, and sleep debt context.
Stress monitoring
Stress score from HRV and resting HR vs. your rolling baseline. Timeline across the day, zones, workouts called out, and breakdowns like peak stress and recovery windows.
Strain & target
Daily strain with cardio, strength, and passive components; cumulative timeline; dynamic strain target from sleep, recovery, and yesterday’s load; HR zone summaries.
History & trends
Pick any day from the date header or calendar; swipe charts horizontally; weekly and monthly trend views; personalized 14-day baselines (with optional calibration hints).
Onboarding & education
Welcome flow, feature wizard, Health permissions, optional profile completion, up-to-90-day historical import from Apple Health, and in-app explanations on every score.
Notifications
Optional local alerts such as morning summary, post-workout recap, high sustained stress, low body battery, bedtime nudge, strain target hit, weekly summary, recovery insight, and sleep consistency — each toggled in Settings.
Settings & data
Light / dark / system theme, sync interval, subscription management, Health access, profile fields, data export, and links to policies for the stores.
Apple Watch
Vertical paged app mirroring all four metrics from iPhone with compact gauges and sparklines; watch face complications for at-a-glance Body Battery (and room to grow).
iPhone — four dashboards, one rhythm
Swipe between Body Battery, Sleep, Stress, and Strain. Each screen shares the same layout: date navigation, hero score, timeline, factor cards, education, and trend charts at the bottom.
Body Battery
- Circular gauge with color bands for high → very low energy
- Day timeline for charge and drain events
- Cards: sleep recharge, stress drain, activity drain, short-term trend
Sleep
- Sleep score gauge with excellent → poor bands
- Stage strip: awake, REM, core, deep
- Overnight vitals sparklines and debt / efficiency cards
Stress
- Live score mapped to calm → very high zones
- Area chart across waking hours; sleep shown calmly
- HRV & RHR context, time-in-zone, peak markers
Strain
- Log-scaled daily strain with “target” marker
- Build-up curve with workouts labeled
- Cardio vs. strength vs. passive split and zones
Apple Watch — quick mirror
The watch app is built for glances: vertically swipe between the same four metrics, each with a compact gauge, sparkline or status line, and color that matches the phone. Data is mirrored from the iPhone app — the watch does not independently read HealthKit. Add complications to keep Body Battery on your face between workouts.
Complications surface your latest Body Battery percentage on supported watch faces; other metrics may appear as the product evolves.
Privacy by architecture
There is no sign-in, no social graph, and no Body Battery server that stores your vitals. Health data is read from Apple Health on device, scores are computed locally, and optional notifications are scheduled on-device. Export is available for your own records. Subscription billing is handled by Apple — we don’t receive your payment details.
Read the full Privacy Policy for App Store disclosure and contact information.
Get the app
When Your Body Battery is approved, replace the placeholder with your App Store URL.