Photoscan

The Photoscan app takes five pictures and stitches them together to make its final product, including this adorable picture of yours truly, oh so many years ago, with a full head of hair.  Using multiple photo avoids the inevitable glare from showing up on the final image.  To avoid the watermark at the bottom, save the picture to your photo gallery first.

https://play.google.com/store/apps/details?id=com.google.android.apps.photos.scanner

https://itunes.apple.com/us/app/photoscan-by-google-photos/id1165525994