I love using the app to check in but it doesnt play well with my iPhone 4S. When adding text to a check-in, I can only see the first couple of words before it goes to the next line. The trouble is there is no way to scroll down to see that text I entered without deleting what I just typed. Not everyone is still using a phone this small so it probably will not get fixed. However, if Windows Mobile can get it right, then I think the app should work for small iPhones too.
geek1156 about Foursquare Swarm: Check-in App