Les Utopiales is a comprehensive application designed for festival attendees, providing essential information and features to enhance the experience of one of Europe's premier science fiction events. Users can access the complete festival program, organized by day and theme, allowing for easy planning of their visit. The app also features biographies and details about various guests, including authors, scientists, and artists, enriching the attendee's understanding of the event's contributors.

In addition to program details, the app allows users to create a personalized list of favorite sessions, ensuring they do not miss important conferences, screenings, and meetings. Real-time notifications keep users updated on any changes or news related to the festival. Practical information such as schedules, access details, ticketing, and on-site services are also available, making the application an invaluable tool for a seamless and engaging festival experience.