We have apps that track our caloric consumption, our impulsive spending, and how many steps we take in a day. They help us keep tabs on ourselves so we maintain an optimum lifestyle. They even foster competition among our virtual followers. So why couldn’t we have something similar for energy or water consumption? Imagine an app that tracks how an entire city performs, how much fuel it needs or how much waste it generates. This is the concept behind the LEED for Cities platform.