We just heard from the developer (Avenza Systems) that their PDF Maps mobile app (iOS) has been updated. Recently updated by Avenza Systems, More than 55,000 USGS topographic maps are available through the PDF Maps Library to be downloaded and viewed using the PDF Maps app. The latest version of PDF Maps allows users to export waypoints to CSV, GPX or KML. Other things users can do:
# Access and load maps through iTunes File Sharing, Wi-Fi or cellular network to read maps anytime
# Access and interact with saved maps without the need for a live network connection (offline)
# Download content from the PDF Maps Library
# View your location on the PDF map using the built-in GPS device (iPhone and iPad Wi-Fi+3G) or via Wi-Fi triangulation
# Quickly view, zoom and pan maps using gestures (pinch, drag and flick, double tap)
# Change pin colors, position and label names
See more info on the App HERE