A free app for Android, by Axhunter.

Face Swap is an app for fun and entertainment. With its simple user interface, you can swap the faces of two people. It also allows you to take photos from the camera roll, add effects, and edit them.

To get started, select one or two photos from the photo gallery. Then use the touch screen to drag and drop the faces between the two images.

It also provides various options for you to choose from, such as scaling and rotating to fit the images.

The application also offers you the option to add the effect of face swapping to your photos.