My girlfriend and many other postal employees would love for a developer or developer's to make an app that would track a route on the road and play it back in a navigation type application. Basically, drive a postal route and be able to follow that same route using a navigation app. Then they could record left and right turns and turn a round locations. Thank you. 
If it works as intended I'll gladly pay for the app.
If it works as intended I'll gladly pay for the app.