You mention that you have no plans to share. Any chance I could persuade you otherwise? I maintain Open Brush and Open Blocks and I'm very interested in getting something more complex working for 3d modelling and actually shipping it to the various app stores. I've got a few different approaches in mind but using Blender as a base it quite appealing.
I could start from scratch obviously - but seems a shame.
This really isn’t Blender as a base- more like uses Blender as a base reference.
I think both those apps are great and happy to know folks like you are maintaining them; this one though is simply more of a personal software than a path to an OSS project!