A hearing device having an input unit for converting an acoustic input to a first signal, an output unit for converting a second signal to an acoustic output and a signal processing unit for generating said second signal from said first signal based on a setting indicating a characteristic of a user's ear, said signal processing unit coupling said input unit and said output unit, to a corresponding method for providing a hearing aid and a corresponding computer program. In order to provide an adaptive hearing device and a method for providing a hearing aid which allow for a compensation for the change in a characteristic of a user's ear, in particular for the change to the ear of a child during growth and which are of a low complexity and do not need additional sensors.