Rock Werchter is a free Android app developed by Appstrakt that provides information on Belgium's biggest music festival. The app offers a complete guide to the festival, including the line-up, schedule, map, and news updates. The festival features four days and four stages with the biggest headliners, young talents, raging rockers, incredible singer-songwriters, new names, and the coolest beats around. One of the festival's unique features is that it deliberately builds its line-up across all genres, ensuring there is something for everyone.

The app is easy to use with a clean interface that allows users to browse the line-up, create their own schedule, and receive real-time updates. The map feature helps users navigate the festival grounds and locate food, drinks, and other amenities. With the Rock Werchter app, music lovers can have the ultimate festival experience at their fingertips.