Hi, We had already this kind of application, I have 3 years of experience in iOS Development, I am familiar with the designing UI which make iOS with responsive with all the iPhone Devices, using Autolayout for creating UIs, have a knowledge of payment integration. We will bound with our milestone we will give you the better result. I appreciated if you give us a chance to serve you, we will never make you sad with our work. We will deliver you the best quality product.