Apple Health Sync Is Live: AI Coaching From Your Apple Watch

Hey, I'm Martin, the founder of Coach. Fun update today: Apple Health sync is finally live. Our Garmin integration has been running for a while, and now everyone on Apple Watch and iPhone gets the same depth.

What syncs from Apple Health

Connect once and Coach pulls in:

• Workouts with per-second heart rate, laps, distance, and calories. Not just a summary line.
• Heart rate and heart rate variability (HRV), the signals your recovery is built on.
• Sleep, split into deep, core, REM, and awake stages.
• Daily metrics like steps, resting heart rate, and active energy.

My favorite part: we backfill up to a year of workout history and 90 days of daily health metrics. Your coach knows how you've been training before you've typed a single word.

Every workout your Apple Watch records shows up, native Workout app or third-party. All 84 of Apple's workout types map into the same sport taxonomy we use for Garmin, so "Functional Strength Training" lands in the right bucket instead of a generic "Other." And we keep your Apple data in full, so when Coach gets smarter at reading a session, we re-run the analysis across your whole history. No re-syncing. It just quietly gets better.

What your AI coach does with the data

Real heart rate and HRV let Coach read your recovery instead of guessing at it. If your HRV is suppressed and last night's sleep was short, Coach can turn tomorrow's hard intervals into an easy aerobic day on its own, instead of holding you to a plan your body already voted against.

Want the science? We've written about heart rate zone training, recovery and sleep tracking, and the training load model behind it. Short version: the more honest data Coach has, the less it assumes.

What's next

Apple Health is the first in a series of provider integrations. Now that the plumbing is built, connecting new sources of your training data gets faster with each one, and there are more on the way. Referrals land in the next few weeks: share Coach with a friend, and there's something in it for both of you. And a big chunk of the last stretch went into performance and bug fixes, the unglamorous work that makes an app worth trusting. We'll keep doing it.

Connect Apple Health in Coach

Open the Coach iOS app and connect Apple Health — thirty seconds, and your coach gets a year of context in return. That's the whole ask.