Rating: 5 / 5
The iPhone app Topo Maps includes USGS and NRCan maps for entire US and Canada at no extra charge. Map downloads intuitive and easy. Searching for geographic locations is best in class. Distance/bearing tool is best in class. UI design is great - easy to learn, easy to use, very polished. Waypoint mgmt is excellent, but the app does not handle imported tracks well, and does not display or create tracks.
Map Sources: USGS 7.5 and comparable NRCan maps of Canadian.
Additional charges: None. All maps included in original purchase price.
Import GPX? Imported Waypoints are handled nicely, but limited to downloading via URL. Imported tracks are not handled well.
NOTE: Here is a list of all the apps I've evaluated..