Garage/ yard sale planner is an app that allows you enter the addresses for the garage/ yard sales that you want to go to. once you have entered them you can see them on the map, if you touch the Garage Sale sign marking the location you can get directions to that address from your current location. Also if you have got directions to a location and you exit the app, the app will continue to monitor your location and notify you upon your arrival and exit. If you open that app back up you can mark that location "Completed" which will remove it so that there isnt any back tracking to a sale that you have already been too.
Note:
Continued use of GPS running in the background can dramatically decrease battery life.