The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
It worked great for the sale. I was so happy to have found this app. However, when I needed to end the sale, the app would not even open. I ran my sale an extra day in hopes the app would be running today. It is still not opening. I see the same thing happened to someone else. I now have to change all prices manually. I am very disappointed, Just glad I was able to delete the app before being charged the $10.