Aim straight down at the soil surface. Avoid sky, boots, and equipment shadows.
Your captured image and analysis overlay will appear here.
FIELD HISTORY
Saved readings
MEASUREMENT SETTINGS
Calibration
For research-grade comparisons, keep phone height, camera angle, time of day, and sensitivity consistent. This tool estimates visible sunlit area; it is not a calibrated PAR sensor.
DATA
Local storage
Readings are stored on this device. No account or cloud service is required.