I found your profile here on CCLancer. I will need the following app, I want to discuss with you about that.
As I´m not a professional person reg. app development, maybe I will need your exact questions to be able to explain well what I want.

So I will start a new company, which will deliver foods and drinks in Germany, Stuttgart.
In the beginning the company will deliver only in Stuttgart-Middle. (so that means post-code plays an important role ) in the app the customer should see our foods and drinks, could choose the quantity, as usual and could be able to pay online or offline. (depending his/her decision).