I have no idea why anyone would be rating this app less than a 4-star. I just used it for a week and found it to be great. I didnt find one thing I disliked about it. And this was my first trip to DC so I didnt have any previous experience on the metro or even in the DC area. I used another app to determine the closet metro stop to my point of destination. It always showed the five closest stations and the trip planner was a life saver getting thru the change from one color to the next.