I live on a bus route and in an old creaky house that is filled with lots of noises at night. I was desperate to fall asleep and went online to find something to drown out the noises and came across Simply Noise. I used it and fell asleep in minutes and now use this app for naps and for great sleep every night! It also makes it much easier to fall back asleep after tending to a wound up dog, a hungry baby or a full bladder.
Feighsbook about SimplyNoise - Free White Noise, v1.2