App to plot my hike on google map?
Kinetic

For all my tracking needs I've become a fan of Kinetic. Accuracy is good. The customizable screens mean you can tailor the view for the activity. For example: I have a simple screen for when I ride my bike that's easy to access when I'm moving fast, versus a more complicated screen I'll use on hikes.

The routes are exportable via email in formats that Google Earth and Maps will happily read (like KML).