Morph

"Morph" is a photo editing application.

You can edit the photo with a special effect in motion pictures and animations that changes one image or shape into another through a seamless transition.

And you can share animated gif with facebook ,twitter and more.

*Morphing is a special effect in motion pictures and animations that changes (or morphs) one image or shape into another through a seamless transition.
Most often it is used to depict one person turning into another through technological means or as part of a fantasy or surreal sequence.