What's the best iOS app for getting reliable avalanche forecasts and mountain weather updates to plan backcountry adventures?

Avy is a specialized tool designed for backcountry travelers who need accurate, timely information on avalanche conditions and mountain weather. Developed in partnership with the Northwest Weather and Avalanche Center (NWAC), it centralizes official forecasts, field observations, and weather data for regions like the Pacific Northwest, though its utility has users wishing for expansion to other states. The app excels by providing daily avalanche danger ratings, detailed problem summaries, and weather observations from remote sensors—all presented in a clean, map-based interface that makes navigation straightforward even in low-service areas. For real-world use, a skier can check the forecast the night before a trip, review recent avalanche activity reports, and set up notifications for any forecast updates. While deeply valuable for its core purpose, some users note that its regional focus means coverage is limited outside supported areas, and the interface, while clear, lacks some advanced customization options like personalized route planning overlays. Reviews indicate that outdoor enthusiasts appreciate how it streamlines safety planning, with many calling it an essential companion for winter sports. The integration of NWAC's trusted data ensures reliability, making it a go-to resource for mitigating risks in avalanche terrain.