SupportSun positions are calculated, not measured. Accuracy depends on your device's location service, compass calibration, and the date set on your device. SunGapAim does not detect obstacles — whether a wall, tree, or building blocks the sun at your spot is something you must judge yourself by looking through the camera view. This app is an aid for planning, not a source of health, UV exposure, or solar power generation guidance. Verify important decisions with professional tools.