Skida (by Mountainsnow AS) is a specialized mapping and planning app designed specifically for the high-stakes world of backcountry skiing, splitboarding, and alpine mountaineering. Unlike general fitness apps, Skida focuses on high-resolution terrain data to help users make safer, more informed decisions "beyond the ropes." Since its version 2.0 update in late 2025, it has emerged as a top-tier successor to legacy tools like Fatmap, offering an interface that prioritizes topographic clarity over unnecessary clutter.

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The app's core strength lies in its 3D terrain analysis and custom route-drawing tools. Users can visualize the "bones" of a mountain through detailed layers showing slope angle (crucial for avalanche awareness), aspect, and elevation. When drawing a custom line, the app provides instant feedback on the terrain's characteristics, allowing skiers to digitally "scout" steep couloirs or ridge lines before ever setting foot on the snow. Recent updates have expanded these high-resolution steepness layers to regions including the Alps, Scandinavia, and North America.