Strava, Garmin and Apple Health sync in the background. Sessions go out to the watch the same way they came in.
Rides, runs and swims land with power, pace, heart rate, cadence, laps and per-second streams. Nothing to upload and nothing to chase — or drop a .FIT file in yourself when you want to.
A structured session written in the builder appears in the athlete’s Garmin Connect calendar with every step and target intact. The steps become laps on the device; they press start.
Sleep, HRV, resting and low heart rate come across from the phone, so recovery sits on the same timeline as the training rather than in a second app you have to remember to open.

An iPhone app for the calendar and the tests, and an Apple Watch face carrying the zones that came out of your own lactate curve.
Connect a device, enter a test, and see your own numbers in it. Cancel whenever.
Start free