1. An apparatus for use with an implantable medical device having sensing circuitry, the apparatus comprising: a user interface for presenting instructions to a user and receiving inputs; communications circuitry for communicating with the implantable medical device; and a processor for operation of both the user interface and the communications circuitry; wherein the user interface and communications circuitry configured for optimization of the implantable medical device's sensing circuitry by performing the following: the user interface presenting a screen requesting that a recipient of the implantable medical device adopt a first posture and indicating that it is awaiting a first input indicating that the recipient has adopted the first posture; upon receipt, with the user interface, of the first input, the communications circuitry instructing the implantable medical device to perform a first data capture sequence and awaiting an indication from the implantable medical device that the first data capture sequence is complete; following receipt of an indication from the implantable medical device that the first data capture sequence is complete, the user interface presenting a screen requesting that the recipient of the implantable medical device adopt a second posture and indicating that it is awaiting a second input indicating that the recipient has adopted the second posture; upon receipt, with the user interface, of the second input, the communications circuitry instructing the implantable medical device to perform a second data capture sequence and awaiting an indication from the implantable medical device that the second data capture sequence is complete; and following receipt of an indication from the implantable medical device that the second data capture sequence is complete, the user interface presenting a screen indicating that optimization is complete.