4Health: Sleep, Recover, Run

4Health turns what your Apple Watch already records into three clear answers each morning: how you slept, how recovered you are, and how your running is going.

SLEEP
• A 0–100 sleep score you can open up: time asleep, time awake after falling asleep, REM, deep sleep, bedtime consistency and toss & turns, each with the reading behind it
• See which part held your night back
• Connect Eight Sleep to add sleep stages, heart rate, HRV, breathing rate, and bed and room temperature

RECOVERY
• A daily recovery score from HRV, resting heart rate, breathing rate and sleep, measured against your own normal rather than a generic target
• Spot a slide in your baseline before the daily score shows it

RUNNING
• Weekly or monthly mileage goals, with the pace you need to hit them
• Mileage, pace and VO2 Max trends, plus best efforts for 1, 2 and 3 miles
• Track your shoes and their miles, and compare pace, stride length and ground contact time in each pair

EVERY WORKOUT
• Heart-rate zones, heart rate and pace charts, splits and weather
• Calorie pace against your usual day, and your best workout hour

TRENDS AND TAGS
• Week, month, 6-month and year trends
• Rate each morning and tag what sensors can't see (late caffeine, travel, a hard workout), then see how each tag moves your scores

WIDGETS AND APPLE WATCH
• Home Screen and Lock Screen widgets
• An Apple Watch app and complications for sleep, recovery, calories and your run goal

PRIVATE BY DESIGN
• Everything is calculated on your iPhone. No account, no servers, no ads, no tracking.
• Your health data never leaves your devices.

Eight Sleep is optional. 4Health accesses your own Eight Sleep data on your behalf. It is not affiliated with, endorsed by, or sponsored by Eight Sleep. Eight Sleep is a trademark of Eight Sleep, Inc. Apple Health and Apple Watch are trademarks of Apple Inc.

4Health provides wellness information only. It is not a medical device and is not intended to diagnose, treat, cure or prevent any disease.