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 analyzes reviews to verify trustworthiness.
I used this to take pictures off my iPhone. When it stored the pictures it didn’t take them in the order they were on the phone. They are in a totally random fashion so you can’t tell what does with what. Wouldn’t recommend.