Guides

Notes from building Correlate

Mental models for Apple Health and the wearables that write to it.

• Guide · As of 2026-09-08

  Apple Health is not a backup of your wearables

  Health is a bridge, not a mirror. What Oura, Garmin, WHOOP, Strava, and Apple Watch actually write to Apple Health, what stays proprietary, and what to keep — as of 2026-09-08.

  Read the guide→

← Back to Correlate