This document outlines the features and design of a mobile app being developed by BIG FM to promote eco-friendly Ganesh Chaturthi celebrations. The app will allow users to pray for the environment, leave messages, tag friends, view blessings from astrologer Bejan Daruwala, and see a pledge gallery. It will track participation levels and display winners and celebrity supporters of its eco-friendly message. The app design includes home, prayer, message, tag, gallery, and terms screens to guide users through the experience.