The interaction between the Information displayed in the Adidas fitSmart (including the vibration that gives feedback as difficulty levels are approached based on HR, LEDs indicators for HR zones, and the animations) and the Adidas Train and Run app makes the running experience so much better than Runtastic. I am sorry but Runtastic is not as good as Adidas Train & Run. I want to see Stride Rate, pace, and other real time metrics, and get feedback on my fitSmart while I run. Runtastic only works in the phone screen, which is useless! Who can watch the screen attached to your shoulder while running?! Wearing headphones to hear a robotic voice is annoying!!!! So, I hope Adidas makes Runtastic as good or better than Train and Run., I wonder if fitsmart will be fully functional with Runtastic eventually, not just HR.