Mobile e-commerce is a sector that's greatly expanding, and you will want to become the new Amazon of shoes and clothing delivery. By doing this, you will be ready to start a new company called ASAP.
In this frenzied age, we know that a customer doesn't have time to spend in several different screens, so our app aims to simplify things by having only three screens: a login and registration, which will appear only the first time, a grid to show the products, and a table to present the cart that's ready for checkout.
Other e-commerce apps probably need a lot of data from their customers, such as their e-mail ID, address, phone number, and so on, but in ASAP, we strive for simplicity and an e-mail address is more than enough.
Therefore, the first screen should only present a text field with a Sign Up button, which is enabled only when a valid e-mail ID is inserted into the text field:
