When you open the app you will find a list of registered stores, listed randomly with an option to search for your preferred store.
Once you have selected your preferred store, you will get a list of products the store is offering. The products in the list are arranged randomly with an option to search for a product.
You can select any product from the product list to view more details about the product. You also have an option to scan a products barcode in-store to view it's details.