HiiKER: The Hiking Maps App is a free Android app that provides access to over 30,000 hiking, tramping, walking, and backpacking trails worldwide. With HiiKER, you can download unlimited maps for offline use and search for trails based on distance, difficulty, elevation, and rating. The app also has a GPS tracking feature that allows you to navigate the trails offline. HiiKER offers a route planner tool to create a custom hiking route, and you can import GPX files from other apps. The app records your hiking activity with its GPS tracker and gives you detailed information about your hike. HiiKER PRO+ offers additional features, such as a measurement tool, stage-by-stage breakdown, and access to premium high-resolution topo maps.