RTU Worldwide Radio is a multimedia iPhone app developed by Justus Olbert. Positioned under the Music & Radio category, it serves as a platform for artists worldwide, particularly supporting underground talents. The app prides itself as the most elite pro-artist platform, catering to the Underground Kings and Queens globally.

Users of RTU Worldwide Radio can explore a variety of music genres and discover emerging artists. The app also offers the opportunity for artists to submit their singles for rotation, fostering a community of diverse talents. With a focus on underground music scenes, RTU Worldwide Radio aims to connect artists with listeners on a global scale.