Your camera roll has two completely different kinds of photos in it, mashed together in one stream: moments you want to relive, and information you need to retrieve. A birthday and a paint code are not the same object, but your phone treats them identically — sorted by date, findable only by scrolling. So the paint code is effectively gone the moment you take it. Keeplea is the second half of that split. Your camera is for moments. Keeplea is for everything else.