hi, i'm new but have been browsing the site for about a year. I'm in the seed process of an internet startup, and part of the physical aspect of my company involves inputting a 7 digit pin into an iphone app. I'm hoping to bring on a developer who can design an extremely simple app with a keypad for the pin number. The unique pin number will then be added to a list, and if there is a duplicate, I need an instant rejection, or if not an instant approval, something like a thumbs up and a thumbs down. I need the option either periodically or at the end of the night to send the pins back to my end for my use.
I'm hoping to get an estimate of cost and time needed to design an app like this, and if possible a potential developer in either the D.C. Area or near Boston.

Thanks in Advance,
Bill