Duo is a free app developed by Sveriges Television AB for iPhone users. It falls under the Lifestyle category and aims to make your viewing experience more enjoyable and engaging. With Duo, you can participate in interactive competitions, express your opinions in debates, and have your say in polls.

The app offers a range of interactive features that allow you to actively engage with the programs you watch. Whether it's playing along in game shows, joining in on discussions, or casting your vote on important topics, Duo provides an immersive and interactive experience.

Duo is designed to enhance your TV viewing experience by providing opportunities for active participation. By giving you the chance to interact with the content, the app aims to make your watching time more entertaining and interesting.

Overall, Duo is a fantastic app for those who want to go beyond passive viewing and actively engage with the programs they watch. Download it for free on your iPhone and take your TV experience to the next level.