Develop a iPhone Application

I am running a physical therapy business, I now want to have someone develop a iOS application for me. For information display needs: General business info and all sorts of categories and sub-categories displaying in a friendly way For interaction needs: A booking system: The App allow customers to book specific service and coach they preferred A feedback system: Customers can make feedback on various criteria if they made the bookings and used the services Other requirements/info: I do not have website, let me know if it is a necessity for the App. Need a suitable design. If click on business location the App should direct the customers to Google map navigation If click on phone number, the App should direct the customers to make phone calls It should be able to display Asian languages properly. More requirements for feedback system and booking system, will communicate with suitable freelancers. Thanks.