연금복권 720 is a free Android app developed by High Soft, which allows users to check the winning number for each round of pension lottery by simply recognizing the QR code using their smartphone's camera. The app also enables users to confirm the Lotto 645 QR code winning, check pension lottery and lottery stores, view their purchase number and generation number, and use the lucky number drawer (2D engine) to generate random numbers. Additionally, the app provides statistical data for the lottery.

The app uses data from the companion lottery (sharing lotto) and users are advised to double-check their lottery tickets to confirm if they have won. The app requires selective access permission to the camera for checking the lottery winning by QR code and the location to search for nearby lottery stores. However, users can still use the app even if they do not agree to allow the selective access right.

Overall, 연금복권 720 is a useful app for those who participate in the pension lottery. It is easy to use and provides relevant information to users.