CalTopo

The CalTopo is a trusted mapping tool for professional mountain guides, avalanche educators, and search and rescue teams. It offers seamless integration between online and mobile platforms, automatically syncing map updates across all devices. The app allows for real-time decision-making in backcountry terrain, with the ability to download maps and layers for offline use. It includes features such as sun exposure, wind, precipitation and avalanche forecasts, GPS tracking, and shared map live tracking.

The app also includes a variety of map layers, including topography, forest service maps, global imagery, shaded relief, slope angle shading, parcel data, public lands, satellite imagery, weather forecasting, and fire history/activity.