2025-08-21 00:00:00 Let a park ranger be your guide! The National Park Service App is the official app for all 420+ national parks. Download parks before your visit and use the app when there is no internet. Find interactive maps, tours of park places, on-the-ground accessibility information, and more. The app was created by National Park Service staff—people who know national parks—to help you make the most of your visit. With all of these parks and a brand new app, it will take some time to finish creating content for each park. If you don’t find what you’re looking for now, check back regularly as our rangers work to complete the experience for each of our parks. Unlike other apps, NPS Mobile takes authoritative information from park rangers and combines it with a great suite of features. Here’s a quick look at some of those features.