The NYC BigApps 2013 competition is underway, challenging developers and designers to create applications that address big city issues and improve people's lives. CartoDB is one of the official APIs for this year's challenge, providing a platform for participants to develop interactive maps and analyze location data in real-time. The City has opened new datasets, expanding the rules and opportunities for participation. CartoDB can help participants with various geo-related needs, including dynamic maps, finding closest locations, intersecting phone data with other datasets, and storing and querying large amounts of data. The competition offers great prizes, and CartoDB is offering free upgrades to Magellan accounts to selected teams.