The move sees the check-in service drawn into competition with Yelp, but the company insists its new feature is unlike any offered by its competitors.
"Instead of other sites where every place gets 3.5 stars, we come up with our scores using the same Foursquare magic that powers Explore," Foursquare wrote in a blog post.
"We look at signals like tips, likes, dislikes, popularity, loyalty, local expertise, and nearly 3 billion check-ins from over 25 million people worldwide."
Users logged into Foursquare's Explore can view or assign a rating between 1 and 10 beside local bars, restaurants and stores. The scores will also appear online on the company's website.
Foursquare is gradually shifting towards becoming a local search engine, with prices, menus and opening times recently added to the service. Its website relaunched last month with a search function for finding local businesses.