Derby was my second iOS application. The app allows users to make predictions to share with their friends. It's meant to be a fun place to compete and create conversations about the random things that might or could happen.
The biggest component of Derby is ensuring a good experience across many devices. The main app is on iOS but predictions can be viewed on voted on with any device with the correct URL. The iPhone app uses your contacts to let you message a link to friends who don't have Derbyy on their device.