Great APP,Loved the layers and features this app offers especially the real time weather alerts, trail tracking , friend finder and map caching.It's really the entire State Park system in the palm of your hand very detailed info and resevation capibilities on the go. Used it on the Katy Trail and was amazed how much more fun we had using this handy app as our guide.I am a frequent user of the parks and loved having the handy event calander to plan our next groups outing. I was delighted to see the map caching features and GPS that works with no cell reception and that these features work not only in the park but also offers it's neat capibilities such as pedometers,altitude,saved treks, anywhere in the State. Great idea and great product!!!!