Garden beds · Solar panels · Phone sky scan

Scan your sky.
Know your sun.

Point your phone up and sweep the sky. SunSleuth maps the trees and buildings that block the light, then estimates sun hours for a garden bed or kilowatt-hours for a solar panel at that exact spot — and helps you size the panel and battery you’ll need.

Open SunSleuthFree in your phone's browser. No download.

• Guided sky scan Starlink-style sweep that fills in the dome until the map is ready.
• Sun hours or kWh Compare garden beds and panel spots with shade through the year.
• Load & battery sizing Test a load against a spot, or pick a panel and see if it can keep up.