The present invention relates to a mobile module system (1), comprising at least one mobile module (2), at least one platform (3) and at least one vehicle, wherein the mobile module (2) may selectively be received on the platform (3) or on the vehicle, and proposes as an advantageous further development that the module (2) and the platform (3) can be collectively loaded onto the vehicle, that the vehicle has at least one receiving base (34) for the module (2), that the platform (3) has at least one receiving base (32) for the module (2), and that, with respect to an imaginary common installation plane (26) for the vehicle and the platform (3), a supporting height (H
2 ) of the receiving base (34) on the vehicle (4) for the module (2) corresponds to or substantially corresponds to a supporting height (H
1 ) of the receiving base (32) at the platform (3) for the module (2) in at least one usage position. The invention also relates to a mobile module and a platform, to a method for using a mobile module system, to a mobile supporting device system, and to a method for using a mobile supporting device system.