Microsoft Soundscape is described as 'uses 3D audio technology to enhance your awareness of what is around you, and thereby help you get around and explore your surroundings' and is an app in the Travel & Location category. There are five alternatives to Microsoft Soundscape for iPad, iPhone and Android. The best alternative is Proloquo4Text. It's not free, so if you're looking for a free alternative, you could try Eclipse Soundscapes. Other great apps like Microsoft Soundscape are Audiojack (Paid), Proloquo2Go (Paid) and Keeble (Paid).
The Eclipse Soundscapes Project app is specially designed so that people who are blind and visually impaired can share in the awe and wonder of astronomical events in real time with their sighted peers.