The problem carbs solves

Carbs is a smart app that calculates your carbon emissions and compares it across a group, giving you a position on the leaderboard. Carbs also gives you a community of like-minded individuals who work towards the same goal of minimising their carbon footprint. 
Apart from being the best, carbs also specialises in giving you tips on how to minimise your carbon emissions. Not only does it provide you with a list of tips and tricks that you can incorporate within your day-to-day life to minimise the carbon footprint that you render out, but it also gives you a chance to share it with people across the nation and have them like your initiatives. On the regularity of your steps/initiatives taken, the app also maintains a streak.

Challenges we ran into

react-native wasn't cooperating.