Foursquare is a location-based social networking platform that allows users to share their location with friends and discover new places to visit. It uses a system of check-ins, reviews, and recommendations to provide personalized recommendations for restaurants, bars, and other local businesses.
It is likely that the Foursquare logo was created using Neutra Text Demi Italic, a geometric sans serif typeface designed by Christian Schwartz. Neutra Text is based on the principles of architecture and design by Richard Neutra.