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TreadCal support

A question about your climb? Get in touch.

Include your TreadCal version, iPhone or Apple Watch model, and a short description of what happened. Please avoid sending health records or other sensitive information.

Measuring treadmill incline

Stop the belt before calibration. Follow the app’s two-position instructions and use a stable surface aligned with the treadmill deck. Enter measured percent grade, rather than assuming a treadmill’s numbered incline level is the same measurement.

Understanding calories

TreadCal estimates active calories from your workout inputs. Body weight, speed, grade, vest weight, and rail use can affect the result. Estimates are not direct measurements and can differ from other apps or the treadmill display.

Heart rate and Apple Health

Allow the relevant Health permissions to record heart rate and save workouts. You can review TreadCal’s access in Apple Health. Wear your Watch snugly enough for a reliable sensor reading. Heart rate zones are estimates, not medical guidance.

Purchases

If you have already unlocked TreadCal Pro, use Restore Purchases in the app while signed in to the Apple Account used for the purchase. Apple handles payment and refund requests.

Deleting data

Delete TreadCal to remove its local app data. Workouts already saved to Apple Health are managed separately in the Health app. See our privacy policy for details.