What is "hipstamatic"

Hipstamatic is a digital photography application for the Apple iPhone and Windows Phone sold by Synthetic Corporation. It uses the phone's camera to allow the user to shoot square photographs, to which it applies a number of software filters to make the images look as though they were taken with a vintage film camera. The user can choose among a number of effects which are presented in the application as simulated lenses, films and flashes. Several of these are included with the application, while others may be acquired through an in-app purchase. The application has sold four million copies as of January 2012.