Yes and NO, It can be used when using add-ons like the Wahoo, but it wont interact with an app lie that Wahoo. It is a basically Google Maps - Bike Routes for the iPhone. It does nothing to record your miles or speed. You would be able to use both apps at the same time.

It work really well, and just the other day they updated. It now has the Highlighted bike friendly streets/lanes/path. and allows you to bookmark addresses. It updates your location along the route as you go, and turn by turn directions(click though, no voice telling you)