Had no issues with the
Had no issues with the sensors or the app which was easy to use. Had no problems uploading the data to Wesper and got my results in a few hours. I used it for three nights to make sure I was getting a full picture of my sleep data which was maybe overkill. The sensors were comfortable and didn't affect my sleep. I waited a few weeks to do the test and was worried that the batteries in the sensors might have lost their charge but had no problems. I saw a lot of negative reviews which made me nervous to try this test but maybe a lot of them were user error? Not sure, but I didn't have any of the issues that other users experienced.