To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
It did not work as advertised. I used this for the windows that flank my front door to keep the neighbor kids from peeking in while asking to play. It peeled off after a week or so. Never was able to get the bubbles out no matter what I did.