This document describes a proposed mobile application called the Friendship Calculator for Windows Phone 7. The application would allow users to enter two names and calculate the percentage of friendship between those individuals. It includes sections describing the existing system, proposed system, how it works, modules, functional requirements, system requirements, use case diagram, testing and implementation, conclusion, and scope for expansion. The key details are that it is a Windows Phone 7 application that takes two names as input and outputs a friendship percentage, with the goal of being a fun and entertaining application.