I continue to be impressed with MacGPS Pro since I purchased this little program a couple of years ago. I have used it with free topo maps for plotting my path for various hikes. This fall, I went boating with a friend where I used it in real time with BSB charts. He was equally impressed. Big on features for land and sea, this program serves my GPS needs well. The updates are regular and most of them are free. Great software for $40.00.