My rating was a 9.1 based on what white noise has done for me. I used a Fitbit flex sleep tracker to track my results. As you will see from the images on the right The only thing that woke me up was bath room break , acid reflux and a dream or two. Then check out the over 3,000 reviews on amazon. Be sure to rate and post your results . You can also record them on the excel document under the tools tab at the top.