This is only for converting 2d photos to 3d. If you have photos shot using portrait mode on Iphone/Galaxy/Pixel, they have a local tool that extracts depth info. AFAICT that is free, although it requires at least a GTX1650 for some reason.
HoloPlay Studio works with PC and Mac.
To import, edit, process and convert depth photos, videos, and other holographic media, almost all PCs and Macs with HDMI and USB-C will work.
To run and create heavier-duty interactive applications with Unity or Unreal, we recommend a PC with a GTX 1650 or equivalent, CPU with Intel i5 or higher, and at least 8GB of RAM.
It sounds like the discrete GPU is only needed for specific things which seem like they could reasonably need a discrete GPU
(We're both talking about the "Minimum Requirements" section on https://lookingglassfactory.com/product/portrait, in the bottom right of the page below the big blue buy button)