You can download ArrayCalc 6.4 for Mac from our application library for free. The software lies within Audio & Video Tools, more precisely Music Production. The actual developer of this free Mac application is d&b audiotechnik.
From the developer:
ArrayCalc is a simulation tool for planning system configurations. This includes defining the quantity and optimum aiming of loudspeakers, calculating subwoofer arrays and the time alignment of these to the main arrays, documenting weights and overall dimensions of arrays, as well as producing printable rigging plots and parts lists.
You may want to check out more software for Mac, such as Mixtikl 5, Noatikl 2 - Generative Music Lab or Resound, which might be similar to ArrayCalc.