Apple Health connects Kenso to your iPhone's health data (heart rate, HRV, sleep, steps, body metrics, and nutrition) so your recovery and readiness readings reflect what's actually happening in your body, not only your training log. It's available on the iPhone app only, and Kenso only ever reads this data; it never writes anything back to Apple Health.

Where to find it

Settings → Health & Connections → Apple Health (toggle).

Connecting

Turning on the Apple Health toggle triggers Apple's own permission sheet, listing every type of data Kenso is asking to read. Review the list and allow the types you're comfortable sharing. You don't have to allow everything for the toggle to work, though Kenso reads less the more you leave off. Deny the whole request and Kenso shows a message pointing you to iOS Settings to change your mind later, since the app can't re-prompt you once you've said no.

What Kenso reads

Kenso can read: heart rate, resting heart rate, heart rate variability (HRV), blood oxygen, respiratory rate, VO2 Max, active and resting energy burned, steps, sleep, body mass, body fat percentage, date of birth, workouts, and nutrition data (calories, protein, carbohydrates, total and saturated fat, fiber, sugar, sodium, water, and caffeine). See Nutrition and energy from Apple Health for how the nutrition types specifically are used.

Kenso never writes to Apple Health. The permission the system requires for write access is present only because Apple requires it to exist. Kenso doesn't use it, and nothing you do in Kenso appears in Apple Health.

When data first appears

Once connected, Kenso pulls recent history in the background and keeps syncing while the app is open or in the foreground. Your first recovery reading and biometric numbers typically appear within a few minutes, though on a slower connection or with a lot of history to pull it can take a little longer. If nothing shows up after a while, see Apple Health is connected but nothing is syncing.

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