Hello, I am interested in collaborating with you, for which platform do you require the app, I can make the app, but tell me how it should be, there will be a login, what payment gateway would you like to use? what design do you expect, what options and actions will they have,
I think it could be like this
a list of products, where the customer adds to cart then at checkout indicates, address and based on this add an extra cost to the order, in addition to being able to pay what payment gateway would you like?, then when placing the order in the When my orders are listed, the status of the order appears. I don't know if it will have deliveries so that they can see where it is. This, then, will need an app for deliveries. I also create a web panel where you can manage the orders, product prices, reports, I have apps already made that They can serve as a base, I give you source code, support and guarantee, send me a message please, greetings.