VOLO’s alert messenger app keeps you safe and informed on the move. The alert messenger app does this by incorporating VOLO’s proprietary ThunderCall and Messenger technologies. ThunderCall is our automated severe weather warning technology that uses your phones GPS or location signal to monitor your precise location and alert you in advance of severe weather events that threaten your current location. ThunderCall also includes convenient up to the minute weather forecasts based on your current location. Messenger is VOLO’s proprietary “PUSH” notification technology. Using Messenger you can receive important “PUSH” messages directly from your company. For Example: Location closings due to weather.