App Recommendation for automatically stitching screenshots together on iOS As per this marvellous screenshot on another question, is there an App available (preferably an iOS app, but a Mac OS X one might do) that will take a series of screenshots that are produced by taking snaps of various sections of a scrolling App or Webpage display, and automatically create a conjoined single image file.  The example below was done in Photoshop, but the effect is what I would like to achieve.
AutoStich Panorama
...has been my choice for the iPhone. You still need to take the pictures manually fist. You can choose all the pictures which you want to stich from your camera roll.

up to 18 megapixels are supported for stitched panoramas
camera images in any order or arrangement (vertical, horizontal, mixed).
option to stich using high res images for better result