A vehicular navigation apparatus configured to independently operate a dedicated application and an externally-introduced general-purpose application is provided. The navigation apparatus includes a control device and a management device. The management device notifies the control device of attribute information of the general-purpose application in operation. Based on the attribute information, the control device determines whether the general-purpose application operating under a specified condition is allowed to use user interface output under the specified condition. When no user interface output is allowed as a result of the determination, the control device switches over the user interface output to user interface output using another certified general-purpose application.