The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
Your trial is way too short to know if we want it, also your pricing based upon page numbers is ridiculous. You could be a 5 star app, but with your trial and pricing policy why should we even bother to try you.
Like the idea of this, but it simply had to many bugs, so we I went back to just coding in HTML.