This is a neat little free app we made, after placing second on the Berlin Health 2.0 hackathon last year (<a href="http://thehealthcareblog.com/blog/2012/11/28/health-2-0-berlin-code-a-thon-sponsored-by-aetna-international-2/" rel="nofollow">http://thehealthcareblog.com/blog/2012/11/28/health-2-0-berl...</a>). In a nutshell, it's like an Instagram/Lift mashup, and is really fun to use (take my word for it, ha :). It's goal is for people to be motivated to do something about their health, when they see their friends also doing fun challenges to get healthier. We'd love to hear your opinions!