i ran for the first time with my apple watch last night (i'm not really a runner. i've done plenty of walking, but no running). on the watch, i used the apple workout app. on my phone, i also ran the runkeeper app with gps on (i did not open runkeeper on my watch). at the end, the watch said 2.5 miles, runkeeper said 3.1 miles. i can't say for certain which, if either, is right. i get that the watch may not be calibrated on my first attempt. my question is, if runkeeper is accessing the gps can the watch also use the data to calibrate, or am i locking it out and stopping it from calibrating properly?