The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
This is really cool! I really liked the fact that I didn't have to edit any code anywhere and it just worked! There are plenty of options to edit things and try out variations but for me the defaults worked pretty good.
The app looks great on devices large and small. Their newest change to allow the colors to be manually changed via the color code works great. Now the Add to Cart Bar all matches my current them color scheme. Customer support is also quick to respond and very helpful.