Avenza Systems, Ontario Canada has a terrific, free PDF maps viewer app for iPad. The app is ideal for viewing Geospatial PDF maps, tens of thousands available from the PDF Maps store, and can be used on or offline for map viewing and for field data collection and much more. PDF Maps complements MAPublisher and Geographic Imager, the only available methods for authoring geospatial PDF documents within the Adobe Creative Suite. See more http://www.gisuser.com/content/view/22951/2/
Watch the video as I show you how to use PDF Maps to locate and download a map then start creating a custom form and add data.