Good app, needs work

I have been using this app for a while, it has very nice functionality. But: every time I want to pause it or even at the end of the walking session when I want to save the data it freezes, or becomes painfully slow. Clearly programmers need to fix the glitches to make this very useful app (I am using paid version) less painful.

AlexRazd about Pedometer Step Counter & Walk Tracker by Runtastic