A dance off app

This has probably be suggested before so you can stop here if you want lol. I've always wanted to create an app where you can record your best dances to various popular songs. The users partaking in the challenge would record their best moves and which one the apps algorithm deems the best would be given a badge or some form of recognition on their profile. <br>I'd like to think that this app could also be for people who are shy and want to practice dancing.