This unusual free tool analyzes faces and image metadata to estimate an individual's age range, based on initial data you enter. You can post your images online to view or share, too. It works with a wide range of images, but it's meant to be used on digital snapshots of individuals (like newborns) bearing date stamps and other metadata. Its chief purpose seems to be to help busy parents quickly sort through gigabytes of family snapshots without the help of a team of professional archivists and perhaps the Smithsonian (if you want it done this century). Used properly, PicX actually works, after a fashion.

Side Note: Look younger by sliding Year Upwards. :D