Normally I pride myself with creating a prototype before applying to projects like this one.
That's not possible for this one since you're not letting me know what this is about, more than that it is a OS X application.
If you could get in contact , via the chat, and let me know more about the project it would be much easier to determine if I feel comfortable taking on the project.
I, unlike most here, am one of the few that actually enjoy programming for the mac more than the mobile platforms.
Sincerely/
John Grönlund