Meet Swarm: Foursquare's ambitious plan to split its app in two
"Today, the company is announcing the first fruit of this labor, a brand new app called Swarm that will exist alongside the current Foursquare app. Swarm will be a social heat map, helping users find friends nearby and check in to share their location. A completely rewritten Foursquare app will launch in a month or so. The new Foursquare will ditch the check-in and focus solely on exploration and discovery, finally positioning itself as a true Yelp-killer in the battle to provide great local search."