Consumer Reports tested whether high-tech versions of white noise machines work as well as the machines themselves.
We compared two apps with two white-noise machines that were favorites among our panelists in a previous test—the Brookstone Tranquil Moments Advanced Sleep Sounds, $170, and Marpac Dohm DS, $50. In our tests, neither the myNoise app (available for Apple iOS devices) nor the White Noise Free Sleep Sounds app (Android and iOS devices) precisely matched the sounds produced by the machines, such as ocean tides, soft rain, and purring cats, but they sounded very similar.
