a small smartphone application for crossplatform (Iphone and Android)

My customer has a milk chain store. - They have 3 retail shops - They sell only pre bottled milk - They have 2 different bottle volume (2,5Lt, 3Lt, 5Lt) In some of days, they are running out of milk in some of stores because of high demand. So some of customers call and reserves for their milk beforhand. When Customers call, They tell - what they want to - when they will come to pick it up Now they want to have a mobile application that can run both ios and android. I send logo of company, a wireframes for application which can be furher developed. Application It must have; - Very nice looking interface - Customer should be able to register for the first time and state their name, gender, age, contact phone. After registration, there will be no logout but customer should be able to edit information they entered. -Customer should be able to choose from any 3 chain stores to see product availability. After they choose the chain store, they should be able to see how many 2,5Lt -3Lt or 5Lt Milk there is. (Product availability for every chain store is accessible through web, we will provide this) This screen should be illustrated graphically very nice. A Milk bottle diameter inside can be used. Freelancers who apply for this should get my approval for this screen before submitting. - If customer see desired amount in desired chain store, then select the product/s (they can reserve more than one product with desired quantities at the same time, for example 1x2,5Lt Milk, 2x3Lt Milk ) , select the time span when they will pick it up. After quantities are validated, reservation will be submitted. After its submited, This reservation will be in the state of "pending". Reservation will somehow (we will do it) turn to approved. - There will be a screen Where customer will be able to see their actual and past reservations. in this screen customer must be able to see the content of the reservation (What is reserved) - There will be also a homepage. It will be totally static page. I will make you inform when its decided. - Freelancer should also assist the submission of app to market Thanks for reading, and bidding