As an academic who occasionally needs to explore national parks for research, what's a good iOS app for accessing park information and planning visits?

The National Park Service app provides a comprehensive suite of resources. I find the offline maps particularly helpful for navigating remote areas, a frequent requirement during field research. The app's integration of alerts and real-time updates is an interesting implementation of technology for visitor safety. Furthermore, the inclusion of accessibility information is a well-researched design, making it easier to plan inclusive research trips. It's intellectually satisfying to see a government agency leverage technology in such a user-friendly and informative manner. The cross-platform compatibility is also a bonus, allowing easy access from various devices. This app is a novel approach to an old problem – accessing park information – and is surprisingly elegant in its execution.