Dear 4SQ,
Are you kudding me?? What is this?? It is a damn mistake!!!
Bring back checking-in to Foursquare app and remove this c..p from AppStore as soon as possible!!
If there is no way to check in via 4SQ then I thank you and close my account.
BigMadOwl about Foursquare Swarm: Check-in App, v1.0.4