What's the best iOS app for discovering and navigating off-road trails?

onX Offroad is a specialized mapping application designed for off-road enthusiasts who require precise navigation on trails and backcountry roads. The app provides access to a vast database of trails, complete with topographic details, land management boundaries, and user-submitted waypoints. For discovering new routes, users can filter trails by difficulty, surface type, and vehicle compatibility, while the GPS tracking ensures reliable navigation even without cellular service through pre-downloaded offline maps. In real-world use, such as planning a dirt bike excursion in a national forest, onX Offroad helps identify open trails, mark obstacles, and avoid restricted roads, with users noting improved accuracy over time compared to alternatives. Reviews indicate that the learning curve can be steep initially, and the interface may feel overwhelming for beginners, but tutorial resources like YouTube videos help overcome this. The app's offline functionality is particularly valuable for adventures in signal-poor regions, though occasional bugs with saved routes have been reported. Overall, onX Offroad balances comprehensive trail data with practical navigation tools, making it a reliable choice for off-road exploration.