Where Apple Health shows what was recorded, Your Body Battery shows what it implies — starting on Today, with deep dives when you want them. Here’s the full feature set on iPhone and Apple Watch.
Today home
Your default screen: hero Body Battery with wake start ring, recovery score, sleep/stress/strain row, contextual insight cards, sleep debt tracker, and a scrubbable 24-hour drain timeline. In the evening, a Wind-Down card shows sleep debt and a suggested bedtime window. Link through to Body Battery detail for breakdowns and trends.
Morning briefing
On first open before noon, a focused sheet summarizes wake energy, sleep score, strain target, and recovery — with one actionable line so you know how to approach the day.
Home Screen widget
Add “Today at a Glance” to your Home Screen: a small Body Battery ring with strain vs. target, or a medium layout with Sleep, Stress, Strain, and today’s target — projected forward between refreshes.
Body Battery (0–100)
Real-time energy with color bands and “started at” context. Detail view adds breakdown cards (sleep recharge, stress drain, activity drain, awake drain) and smooth timeline charts you can scrub to see what moved your score hour by hour.
Sleep analysis
Sleep score from your longest session: stages hypnogram, overnight heart rate, HRV, respiratory rate, efficiency, heart-rate dip, consistency, and sleep debt on Today and in the Sleep tab.
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 & weekly review
Tap the date header for a calendar heatmap — switch metrics and jump to any day. Weekly summary adds a plain-language narrative (“strain target met 4/7 days…”) plus wake vs. end body battery and metric trend charts.
Glossary & what-if
Tap info icons for in-app glossary terms on any metric. What-if sliders on detail screens let you explore how sleep or strain might change your scores — without guessing.
Onboarding & notifications
Welcome flow, Health permissions, optional profile, up-to-90-day historical import, and on-device toggles for morning report, sleep summary, recovery insight, stress spike, strain target, post-workout, bedtime reminder, sleep consistency, weekly summary, optional daily digest, Watch haptic stress nudge, and quiet hours.
Settings & data
Light / dark / system theme, sync interval, subscription management, Health Data Check (authorized vs. missing samples), profile fields, data export, algorithm changelog, and links to policies for the stores.
Apple Watch
Today hub first: large Body Battery with wake start arc and three mini ring gauges for Sleep, Stress, and Strain. Swipe for full metric screens; complications for Body Battery, Sleep, Stress, and Strain; freshness shows whether numbers came from iPhone or were calculated on the watch.