Bookworm aims to become the most convenient and efficient solution on the market for all textbook problems. Bookworm is an iOS application with an easy-to-use front-end interface. Features such as a barcode scanner and integration with the Google Books API make the process of uploading books quick and seamless. The back-end of the application employs an algorithm that corresponds to a double auction economic model. It is designed to optimally match buyers and sellers of a given textbook by finding a competitive equilibrium and clearing the market. By taking care of the matching process for users, Bookworm eliminates the burden of having to wait for a buyer or seller with the complementary supply or demand, respectively. The algorithm also maximizes the number of transactions possible given the price ranges requested by the users, providing users with the greatest probability of success in solving their textbook problems.