The app is having issues, I don't why but since 15 days ago, more or less, it is not saving the runs that I do. Also, it don't recognize my username, so every time that I open the app I have to log in. But no matter what I do, at the end of run; when I hold the bottom to save the training, it just stays charging, but never saves the run. That's a really a shame, 'cause before that situation, it was the best app for running.