Just programmed the "kind-of" GoogleMaps App for PV panel installation - love to hear your opinion! GoogleMaps uses GPS, compass, gyro etc., downloads location dependent data & guides you with live sensor data & their local algorithms to your destination. In the same way PVLevel uses the same live sensor data, downloads scientific solar data & uses local real time algorithms to display live PV energy & earnings of your PV panels & guides you during measuring, optimizing, planning & installing.