Chimani Yosemite National Park app is by far the best designed, chock-full-of-information app you’ll find for NPs. It has every aspect of information you’d want to know and even has a great, offline map with trail information. What I like most is that the developer clearly has a love for the National Parks and it shows in the entire package. I emailed the developer and they responded extremely quickly and also informed me that there are a bunch more parks in the works. I highly recommend buying this app even if you are just curious about visiting any of them in the future. There’s enough information in there to keep you entertained and get you psyched up for the journey!