Hi
I am calibrating OLEDS (PVM’s,PVM-A), using i1d pro, which is the cheap 250$.
I use HCFR, and considering the limits of PVM series, the results are good.
Sony white balance app requires at least the i1 pro. I did not try it.
We are also concidering. We use PVM1741 and its exellent, and Pana 2550 which is also nice. We will take the OLEDS, they are better, and quite accurate out of the box.