CU Buy-Self is an Android application developed by 주BGF리테일. It is a lifestyle app that enables customers to scan products and purchase them directly at the store, while also utilizing CU membership benefits and discounts. However, it is important to note that this service is only available in select CU stores that have promotional material for separate guidance.

The app offers an easy CU membership registration process that unlocks various benefits, including earning and using CU points or discount SKT membership at checkout. It also generates an offline payment barcode for registered cards, making it more convenient for everyday use. Scanning a QR code attached to a kiosk or store will direct you to the product scan screen where you can add items to your shopping cart by scanning their barcode. To complete your purchase, you can pay through the app and avoid lining up at the counter. Before leaving the store, simply scan the purchased barcode on the device's barcode scanner.