This document proposes a mobile app called DatIdea that helps customers choose the best mobile data and call plans based on their usage. It tracks daily usage and suggests optimal plans from different providers to save customers money. The app aims to target millennials in metro cities in India and offers free features like comparing all plans as well as premium features like a wallet with interest and cashback on recharges. It seeks to partner with mobile networks and retailers to promote the app through digital advertising and in-store promotions.