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.
We use it to automate the electric blankets and it has literally changed our lives. You can trigger based on multiple events such as time, temperature etc. So for example we adjust it to start heating up our bed earlier if it's a colder night. Highly recommend.