Write an mobile application for hand made products

i need ios and android app to sell items will be created by sellers 1: the app will have 2 faces one for seller and one for customer 2: the app will include way to send and show the location to allow customers and seller to meet 3: include credit card payment option 4: the app will include rating option for both side seller and customer and every product will have its evaluate 1 to 5 stars 5: will provide you translation to have both version Arabic & English 6: Admin user will have access to add seller and accept sellers using email and mobile number with all other admin facilities 7: Chatting option should be available between seller and customer for every item 8: we need estimate time to prepare every item + estimate time to deliver from seller to customer 9: ability to customer to search in specific products 10: one of the sort options in search items result will be the total time (Preparing + Deliver time). 11: we need availability hours for the seller for example "this items will be available from 9AM to 6PM" 12: Ability to make appointment for prepare and deliver the items 13: Delivery is in 2 options: 1: customer will collect 2:seller will deliver with extra fees 14: customer will be able to see all preparing steps to follow the process project name : will be update project time : ASAP in future will continue develop the APP, we need the app with open source