Where do Zonometry's heart-rate boundaries come from?

On iOS 27, Zonometry can use the heart rate zones in Apple Health. Otherwise you set them in the app, starting from 140 and 165 bpm. The boundaries describe your chosen setup and are not a lab measurement.

Will Garmin, COROS or Polar workouts count in Zonometry?

Only if the workouts and their heart-rate readings reach Apple Health in a usable form. The workout record and the heart-rate stream are separate requirements, and those import paths have not been tested end to end.

Do I need to record workouts again for Zonometry?

No. Zonometry reads your existing Apple Health records. The session view needs effort ratings and the heart-rate view needs heart-rate readings.

Zonometry Archives -

Indie App Spotlight: Zonometry splits easy sessions from easy minutes

23 October 2026

tfk the5krunner

A month of 80% low-effort workouts can hide that just 60% of heart-rate time stayed low.…