I rated this a 4, but really a 3.5. It’s a good concept - buy a solo walking tour and download to an app on your phone. Works well with spoken instructions to navigate between points of interest and a map if you get lost. The guy providing the narrative did a good job and it was in the main interesting. As with this type of recorded tour, things have changed since it was produced. The library is no more and a couple of other places seemed to have vanished. Charlotte isn’t the most exciting of places if you judge by the contents of a tour and seem to be pulling down any buildings with some history. Not specifically this tour’s fault, but you probably have to check the content at least once a year to check it’s still accurate. Overall, I enjoyed this though and the convenience of being able to do it at a time that suited me was appreciated.