WOUDiO is a next-generation progressive web app (PWA) audio guide platform for museums, heritage sites, and cultural venues. It unites human editorial judgment with AI-assisted workflows—multilingual narration, translation, and audio synthesis—without requiring visitors to install a native app. After scanning a QR code, guests access immersive AI audio guides together with an advanced visitor toolkit: tourism disaster-prevention maps, digital collection and picture galleries, 360° spatial experiences, e-books, and integrated ticketing where published.