The VTK iOS integration may have bit rotted over the years. Unfortunately, Kitware doesn’t build and test VTK for the iOS/Android platforms. I guess there hasn’t been much demand to justify spending resources. On the bright side, contributions are always welcome. Members of the community (like you) who understand what’s required to make it easier for iOS developers, could help us improve the docs and package integration to current standards for the iOS platform.
I have a an application for macOS that utilizes quite a few modules, and almost none of them are available for iOS. Here’s the list of dylib modules I’m using so far:
Could you extend the existing vtkIOS.cmake with the modules you’re interested in?