We developed comprehensive iOS and Android applications and a web-based play center that integrated their diverse range of content into a single user-friendly platform. This included localized streams tailored to specific regions, 'Best of Rock' special interest streams, a variety of shows and podcasts, and a news section for text-based content. With these advancements, Radio 21 has created a more personalized and engaging user experience, allowing listeners to access their favorite content with ease, and reinforcing their standing as a prime source of entertainment in Northern Germany.