Accuracy and methodology
How accurate are sun position apps?
What sun apps calculate accurately, what affects real-world accuracy, and how SunCast handles sun, shadow, map, terrain, and weather data.
SunCast Guides
Sunlight, shadow, and sun position guides
These guides explain how to plan light direction, shadows, sun exposure, golden hour, and real-world sunlight decisions with SunCast. Start with the accuracy guide when you need to understand what a sun position app can and cannot promise.
Last updated: September 28, 2026
Home and real estate
How to check apartment sunlight before renting
Check a rental’s sunlight in SunCast: scout the street on the 3D map before the viewing, then use the AR sun path at the window to test winter and summer light.
Architecture and construction
How to simulate shadows from a planned building
Simulate shadows from a planned building in SunCast’s Construction Mode: set height, footprint and rotation, then check winter, equinox and summer shadows.
Gardening
Garden sun survey worksheet
Use a garden sun survey worksheet to record direct sun, shade sources and seasonal checks for each bed. Keep observations separate from app estimates.
Photography
Photoshoot sun-scouting checklist
Build a location scout record with camera position, subject, sun direction, usable light window and a weather backup. Copy the checklist before your shoot.
Home sunlight
How to know where shadows will fall on my house
See where shadows will fall on your house with SunCast’s 3D shadow map, AR sun path and shadow ratio, checked for the rooms, garden and season that matter.
Solar planning
Can a sun tracker help with solar planning?
Use SunCast for early solar planning: check a roof with Solar Info, find recurring shade on the 3D map and in AR, and take the notes to an installer.
Outdoor planning
How to find shade for a campsite or picnic
Find shade for a campsite or picnic with SunCast: check ridges with Terrain Shadows, see the sun path over your pitch in AR and plan around cloud cover.
