Truleka is a simple 2-D MT forward modeling software. At the moment, this finite difference software simulates TE (Transverse Electric) response of a 2-D grid. The grid uses flat earth, i.e. topography is not included. The figure below shows how the geomtery and the resistivity of the grid are designed.
The figure below shows the grid and the MT sites. The MT site assignment can be easily moved around on the grid with nodal numbering.
And here are the TE calculated response with the observed curves (when field data are available).