Your wishon is an Ecommerce app with different product categories, sub categories and products for example: (laptop will be the main category Sub category would be brand like Samsung, Apple, and then products against selected sub category/category. User can select the single or multiple items and would have provision to add them into cart and purchase it. User would have provision in checkout to select the payment methods which would be (Online Payment through DC and CC). User will have provision to add their delivery address within the app