Swift Bootstrap - Develop iOS apps faster
Magic Playlist - Get the playlist of your dreams based on a song
Swift Playgrounds - Learn serious code on your iPad in a seriously fun way
Spotalike - Spotify playlist with similar songs, according to Last.fm
Klaia - Empowering creators to grow their business by spending less time on admin & more on creating.
Playlist Machinery - Tools that help you create & organize your Spotify playlists