[mknippen]

Great points. We do use the accelerometer and pedometer data in the phone to give the coaches many key parts of data such as cadence, average pace, stride length, and more.

Regarding form, one of the best ways that we've found to fix it is by doing routine "form checks". During this part of a run, a coach will walk you through your posture, and make suggestions. An example would be something like this:

"Let's take a minute and look at our feet. Where is your foot hitting the ground? If it's on your heel, focus on leading on the center of your foot." They would then proceed to do the same with your arms, shoulders, back, and more.

While we can't get exact data here, we can provide runners with a way of actively thinking about these form issues.