Route3D 3.0 vs Avyline

Route3D is a three dimensional map for outdoor activities. Maps are displayed in perspective and with hills. You can play back routes like a movie, showing each turn. Elevation profile shows the ups and downs of the route. Switch between maps and aerial photography. USGS topographic maps cover the continental USA. Cache maps in internal storage for offline access. Track your position with GPS. Import and export GPX files from other GPS applications.

Avyline is an offline 3D terrain planner for backcountry skiing. Draw your line, see how steep it gets and where the steep ground lies, compare alternatives and export the plan — all with zero cell signal. Estimated slope, steep ground ahead and the official forecast, on one map. PLAN YOUR TOUR • Draw a route and read its elevation profile, the share of its length on ground ≥30° (from elevation data) and estimated time (a range, never a single number). • Corridor analysis breaks the line down: continuous steep sections, overhead steep terrain, potential terrain-trap indicators, aspect rose and elevation-band distribution — terrain facts only, never a safe/unsafe verdict. • Compare two routes side by side on the same facts. Add backup routes, typed waypoints (observe / decide / turn around) and No-Go zones. • Simulate sun and shade by date (free). Export the plan as a PDF or image card with map attribution and a timestamp footer (Pro). • Reuse a plan as a template for a new date (forecast and sun reload). Import routes from other tools — GPX free, plus KML, KMZ and FIT with Pro. • Browse curated classic lines and community ski tours and load one into the planner (free where regions have them). FREE TERRAIN BASE, ALWAYS ON • Slope readout estimates the slope around your position from offline elevation data; turn alerts on (off by default) for a one-time warning when you enter terrain steeper than your threshold. • Look-ahead check samples the corridor ahead and flags steep ground before you reach it — it does not detect avalanches, obstacles or snow. • Steep-ground shading colours terrain at or above 30°; when an official forecast exists, its regional band rating only sets the shade strength — an area input, not a per-slope verdict. • Slope alerts, look-ahead check, steep-ground shading, the slope map, terrain exposure and official forecasts are free forever — never paywalled. OFFICIAL FORECASTS, SHOWN HONESTLY • Avalanche danger ratings from official public warning services (avalanche.org member centers, SLF and EAWS partners), broken out by elevation band — in the regions those services cover. • Ratings expire automatically at their validity end. "No rating" is its own state — never shown as "low danger." • Every forecast shows its source and publication time. TRUE OFFLINE 3D • Each region (~5–40 MB, sized to area and resolution) packs high-resolution terrain, aerial/satellite imagery, contours, hillshade and place names — downloaded once, then usable with no signal at all. • Slope, aspect, contours and shaded relief rendered at 60 fps by an in-house engine. • The Terrain Exposure layer classifies avalanche terrain into three in-house grades (1–3), computed on-device and honestly labelled as not an official rating. • Search peaks, passes and huts; save your own waypoints. FREE VS PRO • Free: one downloaded region, the entire safety base above, every map layer, sun & shade simulation, curated classic lines in the planner, and a taste of planning — draw one route with its profile. Safety is never paywalled. • Pro (a single annual subscription, $4.99/year): the full planning toolkit — corridor analysis, A/B route comparison, backup routes with typed waypoints and No-Go zones, plan-card export (PDF/image), templates, KML/KMZ/FIT import, unlimited saved plans and every supported region, fully offline. IMPORTANT Avyline is a decision-support tool, not a substitute for formal avalanche training, a current official forecast, beacon/shovel/probe or your own judgment. Corridor analysis and profiles report terrain facts only — they never assess snow stability or issue a safe/unsafe verdict. Terrain angles come from digital elevation data with finite accuracy, which the app discloses openly. A low ≥30° share is not low risk: overhead slopes and runout zones can lie outside the corridor. Travel in avalanche terrain at your own risk. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/