While there are hundreds of thousands of apps for the iPhone, knowing what you need before you need it is a challenge even Apple hasn’t been able to overcome. Case in point: A photo-stitching app that can take several small-frame photos of a panoramic vista and stick them together to create one big glorious photo. Of course, there are applications that do this for Mac, Windows and Linux computers, but I don’t get the impression they are widely used among millions of consumers. Why? It’s sort of the out of sight, out of mind problem.