I must confess that I am not the kind of person that would generally recommend white noise type apps or any others that boost productivity but not this one! It actually felt like I had managed to bring a trendy cafe into the office (coffice anyone?) and it helped me to focus on what I needed to do because I work in a.very.noisy.open plan.
More details here but from me, its a definite recommend!
If anyone uses it and like it, please lemme know your experience.