EmpireWorld

So it seems there is no official about the file types. I wanted to make an Affinity Designer importer for Unity, so according to Ben's Post, can I make the importer for Unity? Thanks.

Hi. Recently I wanted to make an Affinity Designer importer for Unity3D, but I didn't find any documentation about what are the Affinity files and there is no documentation about it. It would be awesome to have some information about them, then we will be able to add some more plugins and importers and extend affinity designer. For example, we need documentation for .afphoto and .afdesign files. Thanks.

Should i buy Affinity Designer for each platform separately?