Abstract: A method for providing feedback to a user of a breathing gas delivery system includes collecting usage data during use of the breathing gas delivery system, comparing the usage data to a therapeutic target, generating feedback based on the comparison of the usage data to the therapeutic target; and communicating the feedback to the user. An apparatus for providing feedback includes a user interface in communication with the air flow source and configured to be coupled to a user to provide air from the air flow source to the user, a controller having memory for storing a therapeutic target, one or more usage data inputs. The controller is configured to compare usage data to the therapeutic target to determine feedback for the user. A feedback communicator presents the feedback to the user.