The Tadaa 3D app for Apple products adds an arresting effect to your photos, making a foreground object move around when you tilt your phone, like an old postcard with a plastic lenticular 3-D screen. But the app, which costs $3.
via Pocket http://www.nytimes.com/2013/09/12/technology/personaltech/an-app-to-add-artsy-blur-to-photos.html
