The current version of amroc is, like every online room mode calculator, only capable of calculating simple rectangular rooms. amroc pro will change this constraint. It will contain an extremely easy interface to model your space in 3D. When you are ready, you click some fancy "calculate" button, your model is sent to my servers, and the magic happens with the help of the finite element method.
Such calculations have always been tedious and/or expensive; amroc pro will change that for you.