Several weeks ago, Foursquare said it was launching a new app called Swarm. The Swarm app aims to help track down your friends when you are out. Swarm will let you see which of your friends are nearby even if they have not checked in somewhere.
You can also suggest plans to your Swarm friends. Swarm is a separate app from Foursquare so the features will be a bit different. There will be new stickers that replace things like becoming a “mayor” and the leaderboards. This makes Swarm less about competition.
Swarm will let you search back through your entire check-in history within the Swarm app. Swarm is free to download, but it may be boring unless more of your friends join it.