The app COu aims to educate and promote environmental change. It is targeted towards Australian high school students through the focus on the current climate crisis affecting their future world. The core of the app is the eco-challenge which allows users to track their carbon emissions and aim to lower them individually or in a group comprised of other app users. Users have the opportunity to empathise and understand how people in our neighbouring nation, Kiribati, are affected by our fossil fuel addiction. The overall concept of COu is that any change begins with you, but can grow exponentially when powerful motivation teams with an arsenal of knowledge.