The app has information on all participating light installations to guide you as you visit Llum BCN 2025. You can distinguish between them by colour and shape in four categories: artists, schools offering university degrees, other collaborations and Off Llum. Check them on the 2D or 3D map by lists ordered according to distance or artists’ names. Create itineraries, receive alerts and update notifications and explore the tutorial to discover all the possibilities of the app. Improvements have