Blender. Blender 4.2 to 5.2 installs Frame Medic as an extension. Blender 4.0 and 4.1 use the classic add-on package, included with every licence. The interface is in English.
Machine. Any computer that runs Blender. Frame Medic reads your graphics cards to judge video memory, on Windows, macOS (Apple silicon included) and Linux.
Licence. The Python code is GPL-3.0-or-later, as Blender requires. The name Frame Medic, the logo, the interface artwork and the documentation are Studio River material, covered by the licence you buy. Your rights as a consumer stay intact.