Sun Tracker - Golden Hour

Sun tracker - Golden Hour is your precision astronomical companion for photography, outdoor adventures, and circadian wellness. Powered by 100% on-device high-precision mathematical algorithms, it calculates exact solar and lunar positions, twilight phases, golden hour intervals, and seasonal milestones anywhere on Earth — with zero internet required.

Whether you are a photographer framing the perfect golden hour portrait, a hiker chasing the sunset, an outdoor planner, or simply aligning your day with natural circadian light, Sun Tracker gives you instant, visual insight into the sky.

THREE DEDICATED APP MODES
Tailor the app interface directly to your focus:

• PHOTOGRAPHY MODE (Default): Engineered specifically for visual creators. Get precise start/end timings and durations for morning and evening Golden Hour and Blue Hour. Includes an embedded Solar & Lunar Compass showing exact light angles.
• DAILY TRACKING MODE: Clean overview of essential daylight milestones: Sunrise, Sunset, First Light (Civil Twilight Start), Last Light (Civil Twilight End), Solar Noon, total Day Length, and estimated UV Index.
• MINDFULNESS & SLEEP MODE: Align your biological clock with natural light. Receive mindful daylight break recommendations around solar noon and sunset, and log your mood with optional Apple Health (HealthKit State of Mind) sync.

SOLAR & LUNAR COMPASS
• Real-time directional instrument calculating sun and moon azimuth and elevation degrees
• Live cardinal orientation (N, S, E, W) with concentric altitude elevation rings (30° and 60°)
• Glowing celestial indicators with projected light angle rays and horizon visualization

INTERACTIVE 24-HOUR TIME TRAVEL
• Scrub the interactive slider to simulate sun and moon positions for any minute of the day
• Watch the dynamic sky visualizer realistically transition between daytime blue, golden hour amber, civil twilight, and starlit night in real time
• Instant "Reset" button to snap back to real-time tracking with live system clock

CUSTOM SOLAR REMINDERS
• Never miss the magic light: schedule notifications for Sunrise, Sunset, Golden Hour, and Blue Hour
• Flexible advance offsets (e.g. 15 or 30 minutes before the event) to help you get ready on location
• 100% local notifications scheduled on-device without external servers or push notification tracking

SEASONS, SOLSTICES & EQUINOXES
• Real-time countdown to the next Solstice or Equinox with milestone dates
• Quarterly progress bar tracking your current progression through the season
• Astronomical vs Meteorological season breakdown
• Seamless Northern and Southern Hemisphere toggle

WEATHER & MOON PHASES
• Integrated 7-day weather forecast with daily highs, lows, condition icons, and rain probability powered by Apple WeatherKit
• Moon Cycle overview: illumination percentage, lunar age in days, and visual phase graphic (New Moon, Waxing/Waning Crescent, Quarters, Gibbous, Full Moon)


PRIVACY FIRST — 100% ON-DEVICE
• No user accounts, no logins, no advertising, and zero third-party analytics tracking
• All celestial formulas run entirely on your device using local GPS coordinates
• "Force Offline Mode" toggle available to disable external network calls completely
• Dynamic System, Dark, and Light appearance modes with high-contrast color calibration