adWinner is a free Android app developed by Moma Comunicazione, falling under the Lifestyle category and Shopping subcategory. It is designed to offer prizes to users who scan QR codes found in the advertising campaigns published on the pages of the newspaper "L'Eco di Bergamo."

To participate in the competition, users must register via the app and scan the QR code marked with a graphic characterizing the competition on the days indicated. The app's Instant Win mode will instantly notify users if they win, and they can collect their prize by following the instructions displayed on the screen. The system will also invite non-winners to play again on the following days of play.

The app also offers a premium user option that allows users to access exclusive prizes without having to scan the QR code. The complete regulation is available on the adWinner website and the Eco di Bergamo website.

Overall, adWinner is an excellent app for those interested in winning prizes through QR code scanning.