Abstract: An invisible leash electronic dog collar system and mobile device user interface for training a pet dog to stay within a user-defined space, distance or radius from the user, or predetermined home space or local area map. Additional configuration settings and functionality is provided through a mobile device or smartphone application based user interface. An electronic dog collar or collar attachment is provided for the dog with electrical, vibrational, mechanical, and audible stimulus modalities. A mobile device or smartphone based application is provided for the dog owner to configure and adjust settings and functionality of the dog collar. The mobile device application user interface allows setting the maximum allowable defined distance or radius the dog is able to travel away from the owner or other defined location point. Multiple dogs may be trained and controlled with the system.