A free program for Android, by App Basic.

You will have fun with this photo editing app. It is a simple and easy-to-use tool to create amusing photos. All you need is to take a photo or choose one from the gallery, mix it with another face, and apply one of the many available effects.

The user-friendly app is free and allows you to morph two faces together in, either male or female to get an interesting result. It also allows you to undo the changes you made and change the order of the faces.