App Developer for Dating/Hookup App – Simliar to Grindr

I am in need of an experienced App Developer to develop a hook up app. Basically its an app that users can login and become a member, see users around them and basically go on dates/or hookups. If you need more clarification on what that is, please don’t hesitate to ask… (Budget: $250 – $750 USD, Jobs: Android, iPad, iPhone, Mobile App Development, PHP)