Watch out Yelp: Foursquare is after your lunch. The social location service has added a new feature to its iOS app that gives venues a rating between 1 and 10 in its Explore section.

“It’s our way to give you a quick sense of how much people love it, and it’s a lot different from the other types of ratings you see today,” explains the company on its blog.

“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. We look at signals like tips, likes, dislikes, popularity, loyalty, local expertise, and nearly 3 billion check-ins from over 25 million people worldwide.”

Yelp is the most obvious company that could be disrupted by this move, although that service has some powerful allies – Apple, for example, which is using Yelp for its Siri voice assistant, as well as within its Apple Maps.