This software provides modelling and simulation of automatic control systems in time and frequency domains with a block-oriented user interface featuring over 80 elements. It creates diagrams such as time, Bode, Black-Nichols, and Nyquist.

The wide range of categories include sources, linear, nonlinear, plots, actuators, controllers, time-discrete, converters, logic, miscellaneous, special, and drawing. The software also allows users to illustrate and document diagrams with shapes like lines, rectangles, circles, and text.
One of the most amazing features of the software is its ability to make user-defined blocks in a special design window. Also, users can save frequently used subsystems in libraries for later reuse.
The software supports the investigation of the varying parameter values and different external stimulations to compute the eigenvalues of linear systems. After simulation, the results are presented as data series in tabular form, time, Bode, Nichols-Black, and Nyquist diagrams that can be exported to other applications for further processing.
SimApp is highly distinguished from other similar products due to its intuitive handling and ease-of-use that provides utilizable results in a few minutes. The program also supports the user with a detailed program help.
SimApp has three different editions that distinguish themselves in terms of maximal system size, program functions, and purchase price. The student edition is highly affordable, and there also exists a very affordable Light version.
Version 2.7: New output block; new inverter block; algebraic loop highlighting, improved line handling, bug fixes