Carbon Tracker is an app for tracking your carbon footprint and preventing climate change. It helps you calculate the amount of CO2 you're contributing to global warming.

Its user-friendly interface lets the app understand your carbon footprint and prevent global warming using your data.  The first step is to enter your information. You can enter your city, country, and the like. Then you need to choose the activities that you're involved in. There are different activities, like walking, driving, and so on. Listing what you eat and other habits is also a plus. 

The app's calculations were based on open databases regarding CO2 emissions. Data from these sources are used and updated by the main international NGOs concerning climate change.