JOYIN is a lifestyle app that allows you to keep up with the latest news and get great deals from your favorite shops. With JOYIN, you can communicate with shops, make reservations, and receive coupons easily.

One of the main features of JOYIN is the ability to search for shops by name, QR code, or ID, and add them to your list. Once you've added a shop to your list, you'll be able to receive updates and coupons from that shop on your home screen.

JOYIN offers two types of coupons: green and red. Green coupons are issued by the shop itself, while red coupons are special one-day coupons that you can only use on the day they're issued. You can easily make reservations or contact shops through the app's web reservation or chat feature.