SunTrail 3D — Solar Hiking

⛰️ SunTrail 3D: The ultimate solar expert for your hikes, walks, and mountain adventures.

Whether you're a casual walker looking for the sun or a pro alpinist avoiding morning ice, SunTrail 3D is the only app that projects real sun shadows onto actual 3D terrain in real-time.

Official HD mapping: SwissTopo (Switzerland), IGN (France), basemap.at (Austria), BKG (Germany), IGN (Spain). Worldwide coverage via OpenTopoMap.

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☀️ EXCLUSIVE: HIKER TIMELINE (PRO)
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Stop guessing if you'll be in the sun when you reach that mountain pass.
• 3D Colorization: Your track changes color (Gold / Green / Blue) based on solar exposure at your estimated arrival time.
• Pace-Aware: The analysis adapts to your walking speed.
• Real Shadows: Calculation includes terrain, forests, and 3D buildings for total realism.

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🏔️ ADVANCED 3D ENGINE
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• High-Precision Maps: SwissTopo (Switzerland), IGN (France), basemap.at (Austria), BKG (Germany), IGN (Spain), HD Satellite.
• Total Immersion: Visualize terrain from any angle with exceptional smoothness.
• Live Weather: Animated rain and snow particles directly on the 3D map.
• Digital Inclinometer: Measure slopes in real-time for your safety (avalanche risk).

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📍 GPX & NAVIGATION
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• Import GPX Tracks: See them "draped" over the actual 3D relief.
• Robust Recording: High-precision GPS tracking that works even with the screen off.
• Smart Elevation Profile: Distance, elevation gain/loss, slope, and VAM stats.
• Offline Mode: Download maps before you go for total autonomy in the mountains.

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🛡️ SAFETY & PRIVACY
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• SOS Button: Share your exact coordinates and altitude in one tap.
• No Account Needed: No login required, no personal data collected.
• Complete Privacy: Your tracks stay on your device.
• Independent: Developed with passion, zero ad trackers.

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⚠️ INFORMATION
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SunTrail 3D uses official data (swisstopo, IGN, basemap.at, BKG, IGN España) according to their open-data licenses. The app is independent of these entities.

Available in English, Français, Deutsch, and Italiano.