Dream:On

The Dream:On app, created by London-based mobile developer Yuza and Hertfordshire University psychologist Richard Wiseman in the UK, is a crowdsourced research project into how sound affects our dreams.
During key moments of the sleep pattern, the app plays user-selected soundscapes to the dreamer’s subconscious, in order to positively alter their dreams. When they wake up, they are prompted to share their dreams using the app or Facebook – where they can tag any friends who appeared in them.
Wiseman intends to use the results to inform a scientific paper. "We still know relatively little about the science of dreaming and this app may provide a real breakthrough in changing how we dream, and record and track those dreams," he says.