Checkmate for Foursquare (for iPhone) Release!
My second iPhone app, Checkmate, just got approved in the Apple App Store last night. It’s an auto-check-in app that runs in the background. You select your favorite venues, and Checkmate will check you into them when you get close enough, even when the phone is still in your pocket! I wrote this app because I got annoyed at forgetting to check into places on foursquare while there.