GRUBER DriverApp is a free application dedicated to Gruber Logistics carriers that allows the complete management and real-time tracking of active transport orders. NO USER NAME OR PIN CODE: why bother to remember yet another username or PIN code? The Gruber Driver App allows you to log in with your phone number quickly and easily. The GRUBER DriverApp allows you to: - Communicate, to the customer, the real-time location of the truck while the driver is executing an active transport. The App