Shortly after iOS users received an update to Gmail, Foursquare followed with version 5.3.5 of their iOS application. The app runs faster, knows the latest places that opened doors in your vicinity and allows you to mark a check in as important. You can download 5.3.5 from App Store. For now the new version hasn’t hit Android devices.
Have a look at the differences between old and new in the screenshots below (credit: The Next Web):