An apparatus for classifying a motion of a movable personal appliance comprising an inertial sensor, wherein the moveable personal appliance is a moveable oral care device, the apparatus comprising a motion pattern recognition device configured to discriminate between two or more motion patterns (15i, 15 2, 15 3,..., 15 n) contained in a set of motion patterns of the movable personal appliance, and an interface for providing at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) from the inertial sensor to the motion pattern recognition device, the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) representing a motion of the movable personal appliance, wherein the motion pattern recognition device comprises a neural network configured to receive the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) and to map the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) to at least one motion pattern (15i, 15 2, 15 3,..., 15 n) contained in the set of motion patterns to generate at least one mapped motion pattern, wherein the at least one mapped motion pattern is associated with at least one class member (101A, 101B, 102A, 102B,..., nA, nB) of one or more classes (101, 102, 103, 104) so that the at least one class member (101A, 101B, 102A, 102B,..., nA, nB) is selected based on the motion of the movable personal appliance; wherein one class of the one or more classes (101, 102, 103, 104) comprises at least one class member, wherein said one class represents a user group, and wherein said at least one class member represents at least one user of said user group, wherein the at least one mapped motion pattern (15i, 15 2, 15 3,..., 15 n) is associated with the at least one class member for identifying said at least one user based on the motion of the movable personal appliance; and wherein the motion pattern recognition device is configured to select, after identifying said at least one user, a user-specific motion pattern preset comprising two or more user-specific motion patterns (115i, 115 2, 115 3,..., 115 n) of the movable personal appliance which are characteristic for said identified at least one user. a motion pattern recognition device configured to discriminate between two or more motion patterns (15i, 15 2, 15 3,..., 15 n) contained in a set of motion patterns of the movable personal appliance, and an interface for providing at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) from the inertial sensor to the motion pattern recognition device, the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) representing a motion of the movable personal appliance, wherein the motion pattern recognition device comprises a neural network configured to receive the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) and to map the at least one inertial sensor data (17 1, 17 2, 17 3,..., 17 n) to at least one motion pattern (15i, 15 2, 15 3,..., 15 n) contained in the set of motion patterns to generate at least one mapped motion pattern, wherein the at least one mapped motion pattern is associated with at least one class member (101A, 101B, 102A, 102B,..., nA, nB) of one or more classes (101, 102, 103, 104) so that the at least one class member (101A, 101B, 102A, 102B,..., nA, nB) is selected based on the motion of the movable personal appliance; wherein one class of the one or more classes (101, 102, 103, 104) comprises at least one class member, wherein said one class represents a user group, and wherein said at least one class member represents at least one user of said user group, wherein the at least one mapped motion pattern (15i, 15 2, 15 3,..., 15 n) is associated with the at least one class member for identifying said at least one user based on the motion of the movable personal appliance; and wherein the motion pattern recognition device is configured to select, after identifying said at least one user, a user-specific motion pattern preset comprising two or more user-specific motion patterns (115i, 115 2, 115 3,..., 115 n) of the movable personal appliance which are characteristic for said identified at least one user.