The electronic device industry is an age old industry. Several new electronic ICs evolved day by day with more and more components being cramped into smaller and smaller spaces. Presently, advanced VLSI and ULSI devices are made commercially available to the consumers. On the other hand, the micro-electronics industry suffers from physical limitation as well as from technological limitation. Thereby, the search for new device principle cannot be avoided. In this regard Spintronics technology is vividly significant as it employs spin degree of freedom in quantum dot. Since the last decade Spintronics ushered numerous scope in device vicinity. Even though the hands of researchers are tied as there is no simulator for simulating Spintronics circuits and spin based logic devices. The authors now propose a MATLAB based tool which can be incorporated in SIMULINK for simulation of single spin logic devices. Here, GUI based approach is made to create spin environment to design dynamic part of simulation.