I’ve always been ashamed to admit that I try harder in class when I know the teacher is looking at me. I also elevate my arabesque higher when I'm standing next to the girl with great extension. While I realize competition is part of our human nature, I wish I could push myself on my own. Now, there's a new (free!) app, Proof!, that helps you accomplish your goals by adding a little friendly virtual competition. Through the app, you set up personalized goals and share them with friends or family. Then you post a picture or video of yourself following through with the goal—with your friends there to check up on you. It's a perfect way to motivate yourself to reach higher and improve your technique faster. Download the app, available for Android and iPhone, and then challenge your whole class to a little friendly wager: Who can make their double pirouette a triple? Or their triple a quadruple?