Track the Sun
Visualize the solar journey with precision AR technology.
Precise Calculation
Powered by NOAA-based astronomical algorithms, get accurate sunrise and sunset times precise to the minute for any location on Earth.
Augmented Reality
Hold up your phone to see the sun's path over the real world, with horizon and compass scale. The app finds the real sun in the camera image and calibrates itself automatically.
Solstice Tracking
Compare the current sun path with Summer (Red) and Winter (Cyan) solstice curves to understand seasonal solar extremes.
Interactive Map
Explore sun paths anywhere. The sun compass sits right on the map; drag the map to recalculate for any spot on the globe. Switch between 2D and 3D.
Solar Yield Calculator
Estimate the annual energy production of solar panels from tilt, azimuth and location. Measure tilt and direction by holding your iPhone against the panel, see the yield live in the camera view, and save the result as a favorite. On foldable iPhones, measure the roof pitch with the hinge like a carpenter's bevel.
Sun Analemma
Visualize the sun's annual loop position in the sky to understand equation of time and seasonal declination.
Custom Buildings
Draw your own buildings on the map. They appear in 3D like Apple Maps buildings – on the map and in the AR view, with windows and a door as a sense of scale – and cast shadows according to the sun's position, together with the surrounding buildings from OpenStreetMap.
Night Mode
Toggle Day/Night zone visualization.
City Search
Use the top bar to jump to any city.
Moon
Moon path and current moon phase on the map and in AR. The time slider covers the whole day, and Moon Data shows moonrise, moonset and illumination.
Automatic Calibration
Whenever the sun is in view, the app detects it and aligns the sun path exactly – even through thin clouds. A dashed path shows that another date is selected.
Liquid Glass & Themes
Floating controls in Apple's Liquid Glass design (iOS 26 and later), plus the Solaris and Dark themes.
Made for Every Screen
Optimized for iPhone, iPad and foldable iPhones: half folded, the map lies on the table while the upper half shows the sky.
Favorites
Save map views as favorites: favorite places, your own buildings and solar yield measurements, each with its own symbol. They appear as pins on the 2D map and can be exported and imported on other devices.
Photos & Videos
Take photos and videos with the sun path right in the AR view. They are saved straight to Photos, with your own buildings if they are shown.
Data Protection / Privacy Policy
We take your privacy seriously. We do not store any user data. All calculations are performed locally on your device. No personal information, location data, or usage statistics are collected, transmitted, or stored on our servers.