Hi there,
I am just completing a project that is very similar to your request and would like to discuss helping you with creating this game for you. The game that I am completing is only iOS though.
I have a long history in professional games development (15 years now) and I have a team of industry experts for support, so I am confident that I can deliver the game that you are looking for.
I will be able to create a universal iOS game for you that is iOS 7 compatible. It will have viral functionality (sharing to Twitter, Facebook, Email), in app purchase, advertising networks (Applovin, Chartboost, Revmob), and analytical tracking (Flurry).
Estimated time scale is 2-4 weeks, with estimated budget of USD$5,000. To be clear, this is only for the iOS version as the game was written native to iOS. I am planning on recreating the project using a cross platform tool, such as Unity, in the future.
Please contact me to discuss details, as time scale and budget will vary depending on requirements.
Thanks for your time,
Mark.