The app gives many services for customers:* Display one, two or three levels of categories of products.* Customer can sing up to the app then login only once.* Customer can search for any products.* Customer can add any product/s to their wish list and keep.* Customer can add any product/s to their compare list for comparing many products.* Customer can use their cart list with any available product quantity and product properties and controlling it before confirming the cart.* Customers can have one or more delivery addresses.* Customer can check their orders list any time.