Hello,
I have developed a similar kind of web application and have a great mobile development team which can create the application as per your requirement but before i can demo the application i would like to understand the complete concept behind the application so, i can provide you the exact time frame and cost estimation for the complete development.
I believe communication is the key to make any project a success and for that i am available through PMB,Skype,email and mobile so, client don't have any issue regarding the communication with me.
Looking forward in anticipation of your response.
Warm Regards,
Saurabh