Foursquare's Swarm app persists after acquisition, still used by loyal niche of check-in fans
Swarm, the check-in app spun off from Foursquare, continues to operate despite a dramatic decline in activity and public attention. The app was recently acquired, according to a Fast Company columnist, though the buyer and terms were not detailed. A small base of users still logs locations and competes for mayorships years after the service's peak popularity.