If you're more specific about the feedback you're looking for instead of just generally, I could probably be more helpful. Are you trying to improve the design? Are you working at improving conversions? Are you playing around with layout?
I don't have a Windows Phone, but your landing page is informative and answers all of my immediate questions like "What is it?", "What can I expect?" but I think you're selling the features more than the benefits. A good analogy for this is like offering frozen lemonade in the summer and yelling "It's guaranteed to be less than 32F!" As a potential customer, I don't care how cold it is. I'm more interested in knowing that it will help me avoid a heatstroke during this uncomfortable summer.