A few months ago, we had to make some changes to the iOS app information shown on AppShopper to comply with Apple’s policy on pulling information from the App Store. At that time, Apple’s policy specified that certain information, including app ratings, could not be pulled from the App Store and this feature was removed from AppShopper. However, Apple has recently adjusted the App Store information available for public use and app ratings have returned to AppShopper!
Average rating information is now shown in search results and in each individual app listing near the bottom of the page:
The rating reflects the actual App Store user ratings for the current version of each app.