The hack day was a great place to give developers an update about the latest developer tools we have released, and show some of the ones we were working on. This included the iOS SDK Beta which now exposes cover art, artist images and 30s audio previews. We also showed an early version of our new Web API, which we used ourselves to build 2 projects during the hack day: 30s Drum Machine and Spotify iQuiz.
There were a number of very interesting projects developed using existing Spotify APIs and SDKs by multiple services. We chose Vibe Jukebox as the winning project using Spotify. It is an iOS app that adds the user’s favorite tracks to a collaborative room. You can find the whole list of projects on HackerLeague.