I downloaded one of the apps for me on my Samsung and one for my wife on her Apple 7. We both walk together although she is much fitter than I am and compare results. My Samsung seems to count active steps better than my wife’s apple. She has tried to carry it in all manner of ways including taking it out of its case. Still her active steps are all over the place. We have also had her carry both phone, and yes there is a marked difference. This is infuriating my wife. Does anyone else have the same trouble with their mode of using the app?