Book Management App

I need an iPhone app. I would like it designed and built. So i have started a thing in which people donate us books, every type of books, and we record all the books in an excel spreadsheet. Then we sell it for a aggressively cheap price to people or just give it away to people in need. We take all the money and give it for scholarships to students who cannot afford education. I need an app in which I can enter all the books and give a certain serial/code, and all the books can be seen by other people and they can also search for it. They can also reserve the book just by the app. They just give their mobile number and name when reserving the book. They can also see the price of the book.