Content Writing

We are working on a mobile app, that will help sending wishes and gifts to friends and family. I have bullet points on what the app is designed to accomplish, and need you to brainstorm, and write an initial document. The document is aimed to be an introduction to the idea. This document should be able to communicate the idea very effectively and should serve as the reference for marketing and branding team to develop collateral. Since, this is a social app, targeting relatively to young and mid aged people, the language used should be appealing and fresh. It is important to have previous experience writing online, preferably for products or services that have social media engagement. I have listed down my thoughts via bullet points, and I am expecting a 2 page write up. I expect you to talk to me over phone, seek clarifications and ask right questions to understand the idea.