Windows Live Gallery had a great Photo Fuse feature that allowed you to select multiple similar photos and be able to select which faces from each photo would be used in the final composite image. This was great for group photos where in every photo someone isn’t looking at the camera or blinking etc, as you can combine them all and select all the faces that are looking in the right direction. See https://www.youtube.com/watch?v=O-Zy4mLkEL4

Unfortunately, Windows Live Gallery is now unsupported and unavailable for download. Is there any FOSS software that has similar functionality (offline/online)? Preferably on Android so I can directly clean up my picture collection as I take the photos.