Newb here. Is it possible to change the master frequency to 432 or 528 or something other than A440?
You can tweak the master tune in the Advanced section.
However, even more interesting is the ability to load a tuning file ! You can work with any temperament !
There is an interesting article about musical temperaments here → https://en.wikipedia.org/wiki/Musical_temperament#:~:text=9.2%20Books-,Definition,%2C%20piano%2Dforte%2C%20etc.
Hope this helps