Check out this fitness app I have been working on. WeCompete lets you compete with friends and other users in fun fitness challenges, similar to Fitbit. iTunes App Store Link here. I have been making major improvements to the user sign-ups and onboarding flows as a result of feedback from several guerrilla interviews I have conducted. Users said that it was taking too long to get in the app and start playing, so I was able to eliminate several steps and rearrange the onboarding flow.