Hi,
I am an individual freelance, having more than 10yrs of exp in developing applications, window & web based, using .Net (C#.Net, Asp.Net (MVC), XML, WPF, WCF (Webservices) kendo ui, MySQL and SQL Server etc).
By worked with Giants clients like Microsoft as a vendor, got expertise in delivering the quality code with in the time please see my profile.
Time and cost may vary based on the complexity and the requirements.
Please see my profile for the WPF application and i will provide the windows phone app if you want.
Awaiting for your positive response