Dear sir.
i am using X Code 5.1.1
I am expert Storyboards UI.
I am expert JSON.
Don't worry JSON.
I will JOSN Jib for your Source.
Especially My iOS7 App and Code Optimization skill is very high.
My Main Skills:
Objective C, Android Java, Restful service, JSON &SOAP API
googlemap, gps tracking , direction & places api , auto SMS,
MySql and sqlite database, 3D Amination.
3rdparty service(FB, twilio, pubnub, parse)
I will support IPA or APK file daily for checking result.
I can promise high quality and clean code.
Best Regard.