The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
Phebi was so simple to start using. Just download and boom... you've got site specific voice search. Users click on the mic icon, say what they want, and then get my site's best results/matches. I've already seen my first sale through voice search. I also like the data provided -- it is interesting to see how customers reference products and what they look for when they search by voice.