The main function is to push notifications to the user, informing them of the upcoming sale, the product price, the number of items that they have left to buy, and more. It also allows the user to easily log in, and to access the app's various benefits.

When you log in, you will be asked to enter your ID and email address. This is so that we can identify you and give you the benefits that you deserve.

After logging in, you will be able to access the app's various benefits. You will be able to access them by pressing the "i" button on the home screen.

You can access the app's benefits by logging in, and then accessing the menu on the home screen.