The application Trek2There is a great concept app that will potentially be very useful. Currently it is being held back by it being a separate application and the half baked integration is not working on android and possibly iOS.
I feel a better solution to take advantage of Trek2There, would be to add it as a function of the collector app.
This is how I would think it would work:
you select a feature that you have collected and select "trek" from a popup which would then trigger the navigation compass to open, all within collector