Hi, Sir
Are you there?
I have just checked your project proposal.
I am very interest in your project.
I have strong experience in the iPhone(iOS6 + iPhone5)/iPad(iPad mini) and Android development as well as backend web service.
I also have some experience in the following areas: SQLite database, Restful JSON based Web Service, Social Network - Facebook, Twitter, Google API, Audio Streaming, Video Streaming.
So Enhancement of existing app is no problem to me.
Please send message to me only once, I'd like to discuss about more detail specification.
Looking forward to hearing your reply.
Wu