-login with mail and password. You have to connect with an api rest to validate. The service will return you a token and a list of items to display the menu.
-menu: draw the buttons dynamically.
-show order by type: will display an order information (article, client, date, state).
-show order by point of sell: will display an order information (article, client, date, state).
-some filters can be applied to the orders
-the app must send pop-up notifications
-the app must display the quantity of new notifications (like whatsapp)
All the services that the app need will be implemented by other people.