System with a computer for computer-aided creation of an application program, wherein the computer contains a software module, a display device, and an input device. The system has a gravimetric measuring instrument for execution of the application program, and a communications link. The computer executes the following steps: Representation, selection, and linkage of several application modules on the display device; Conversion of the selected application modules and the link into an invalidated application program; Validation of the application program by applying a prescribed rule-set, wherein i) the application program is released for use if the validation is completed successfully, or ii) computer-aided adaptation of the application program with renewed computer-aided validation is made possible if the validation was not successful.