Build me a Mac Desktop App

I am trying to get an understanding of how much it would cost to build an app like this one for myself. [login to view URL] - I have also attached a picture of it.

I am looking to get this done for the absolute least amount of money possible, and would hope that you bid as such.

Programación en C# Cocoa iPad SO Mac Objective C

Nº del proyecto: #16765471

Sobre el proyecto