Door closing apparatus for a door having a door leaf which is moveably mounted on a fixed door frame, comprising - an external force actuated and/or spring-force actuated catching device for assembly on fixed door frames and - a counter-element interacting with the catching device for pulling the door leaf closed, for assembly on the door leaf, wherein it is provided that a) the catching device has a moveably mounted catching element and an external-force actuated and/or spring-force actuated drive unit which is connected to the catching element, b) the counter-element is formed as a lock latch which can be overridden during closing of the door, is mounted on a spring on the door leaf side and has a slope coming into operation during closing, c) the drive unit functions as a motor unit for pulling the door leaf closed and additionally also forms the blocking device of a door opener in order to block the door leaf in the closed position. d) the catching element is formed as a moveable door opener latch which interacts with the driven member of the drive unit, wherein the door opener latch is formed by a supporting body and a latch body which is moveable relative thereto, the latch body is displaceably mounted on the supporting body and the latch body is fixable on the supporting body by means of a blocking device which can be actuated via the lock latch, and wherein it is provided that the supporting body is pivotably mounted, such that the door opener latch is formed to be pivotable and displaceable, or the supporting body is fixedly arranged and a lock latch actuating body is provided, such that the door opener latch is formed exclusively to be displaceable, e) the door opener latch can be coupled and uncoupled with the lock latch for pulling the door leaf closed, such that the door opener latch can be brought into engagement with the lock latch in the pulling region and can be brought out of engagement with the lock latch outside of the pulling region. f) the blocking device interacts indirectly or directly with the door opener latch for blocking the door leaf in the closed position of the door, in such a way that the door opener latch can be switched into a blocking position in which the door opener latch is blocked against movement, and a release position in which the door opener latch is released for movement. - an external force actuated and/or spring-force actuated catching device for assembly on fixed door frames and - a counter-element interacting with the catching device for pulling the door leaf closed, for assembly on the door leaf, a) the catching device has a moveably mounted catching element and an external-force actuated and/or spring-force actuated drive unit which is connected to the catching element, b) the counter-element is formed as a lock latch which can be overridden during closing of the door, is mounted on a spring on the door leaf side and has a slope coming into operation during closing, c) the drive unit functions as a motor unit for pulling the door leaf closed and additionally also forms the blocking device of a door opener in order to block the door leaf in the closed position. d) the catching element is formed as a moveable door opener latch which interacts with the driven member of the drive unit, wherein the door opener latch is formed by a supporting body and a latch body which is moveable relative thereto, the latch body is displaceably mounted on the supporting body and the latch body is fixable on the supporting body by means of a blocking device which can be actuated via the lock latch, and wherein it is provided that the supporting body is pivotably mounted, such that the door opener latch is formed to be pivotable and displaceable, or the supporting body is fixedly arranged and a lock latch actuating body is provided, such that the door opener latch is formed exclusively to be displaceable, e) the door opener latch can be coupled and uncoupled with the lock latch for pulling the door leaf closed, such that the door opener latch can be brought into engagement with the lock latch in the pulling region and can be brought out of engagement with the lock latch outside of the pulling region. f) the blocking device interacts indirectly or directly with the door opener latch for blocking the door leaf in the closed position of the door, in such a way that the door opener latch can be switched into a blocking position in which the door opener latch is blocked against movement, and a release position in which the door opener latch is released for movement.