Not sure why anyone would want to buy those apps that bundle up a single map for the same price as this one. With this app and some time in Google I can find maps for everywhere, and load them into my dropbox account or into local storage. More more cost effective, besides all the other apps seem to deal just with 24x18 inch paper sizes, not the WALL size 36MB PDF files this one is happy to work with and scrolling is soo painful with those other apps.
PS bonus I discovered it reads TIF based FAX files too, feature creep I guess.
MathMajorToo about Large Maps