KAVYLO can work together with Apple Health and Apple Watch. What is shared, in which direction, and whether the integration is used at all is always your decision.
Nothing is read from or written to Apple Health until you grant access. Each data category is granted separately, and permissions can be reviewed or revoked at any time in the Apple Health app or in iOS Settings under Privacy & Security → Health → KAVYLO.
Selected workout types can be started and followed with KAVYLO on Apple Watch. Which workout types are supported can change with app and watchOS updates.
During a supported workout, key session information stays visible on the watch, so you do not need your iPhone in your hand.
You choose which categories KAVYLO may read (for example activity, workouts, heart rate, sleep) and which it may write back. Revoking access does not delete data you already stored in KAVYLO — you can delete that separately.
Availability depends on your device, your iOS and watchOS version, and the permissions you grant. Not every function is available on every device or in every situation.