IDYLL Festivalen is an annual music festival held at the picturesque Isegran in Fredrikstad, Norway. The 2025 edition is scheduled for JuneThe Idyllappen app serves as a practical tool for attendees, providing essential information to enhance the festival experience. Users can access artist information, a personalized schedule, news updates, maps, and the official festival playlist, among other features.

Designed for Android devices, the app is free to use and falls under the lifestyle category. It aims to streamline the festival experience, ensuring that users are well-informed and can navigate the event seamlessly. With its user-friendly interface, Idyllappen allows festival-goers to make the most of their time at IDYLL Festivalen.