SimApp descriptions Modelling & simulation of continuous & time discrete systems in the time & frequency domain. Best suited for the study of automatic control systems. Graphical block oriented user interface with more than 80 basic blocks divided into various categories. . Illustration & documentation of the diagrams with shapes & text. Creation of user-defined blocks in a special design window. Saving of frequently used subsystems in libraries for later reuse. The simulation results are presented as data series in tabular form as well as time Bode Nichols-Black & Nyquist diagrams which can exported to other applications for further processing. Computes the eigenvalues of linear systems. The program supports the investigation of systems with varying parameter values & different external stimulations. SimApp distinguishes itself from other similar products due to the intuitive handling & ease-of-use that provides utilizable results in a few minutes. In addition the user is supported by a detailed program help. SimApp exists in three different editions which distinguish themselves in terms of maximal system size program functions & purchase price. Student can buy the program for an affordable price. There exists also a very affordable Light version.