Frej vs Winter Science

See the entire days weather with a glance. AM at the top, PM at the bottom.

WinterScience: The Mountain, Decoded by AI (Coverage includes most major resorts in the Western U.S., along with select destinations in the East). WinterScience is the first ski forecasting app built from the ground up with AI weather prediction, physics-based snow science, and professional mountain expertise. It delivers the most complete, accurate, and experience-focused mountain forecasts ever available to skiers, riders, guides, and snow professionals. Whether you’re planning the perfect powder day or making safety-critical decisions in the field, WinterScience gives you clarity no generic weather model can match. --- Custom AI Forecasts for Every Mountain Most apps reuse the same model everywhere. WinterScience doesn’t. Our system builds a custom AI forecast for each individual ski area, combining live station data, high-resolution model ensembles, and terrain-specific patterns. Get hyperlocal accuracy that reflects how your mountain actually behaves — ridge by ridge, valley by valley. --- Full Physics-Based Snowpack Simulation WinterScience simulates the entire snowpack using the SLF SNOWPACK model, the scientific standard trusted by avalanche professionals. See detailed layers, grain types, density, wind transport, and machine-learned avalanche instability metrics — a digital snowpit updated continuously for your mountain. --- AI-Generated Ski Conditions Reports Our AI doesn’t just predict the weather — it interprets it. WinterScience automatically writes ski condition reports that translate deep snow and weather data into how the mountain will feel to ski today and over the next few days. --- Weather Matrix — Every Detail in One View Explore the full story of the mountain’s atmosphere with a clean, intuitive data matrix. Visualize temperature, wind, snowfall, precip type, and more across elevations, hours, and days — from historical observations to AI-powered 10-day forecasts. --- Designed by forecasters, avalanche experts, and mountain scientists, WinterScience delivers professional-grade intelligence in a simple, elegant interface. Forecast deeper. Ride smarter. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/