VirtualRoom AU is an innovative application for iPhone that simulates the acoustics of various rooms, providing a unique listening experience. By reproducing sound signals for a virtual listener within a room, users can feel immersed in the audio environment. It requires headphones for optimal performance to avoid feedback noise.

Upon the initial launch, VirtualRoom AU installs an Audio Unit v3 App Extension, expanding its usability across different third-party applications. Users can manipulate sound sources by adjusting their positions and gains, as well as moving the virtual listener within the room. The app offers three room size options and a mirroring function for creating balanced stereo setups effortlessly.