If your 30 days expire, you can use the "trial wrapper" which allows you to learn the tools and practice modeling indefinitely, but it disables the ability to save your work or export files. Key New Features in MoI 3D V5
Greatly improved workflow for those using vector tools like Illustrator or Affinity Designer for 2D profiles. moi 3d v5 free
The short answer is no. MoI 3D is commercial software developed by Michael Gibson (the original creator of Rhino). There is no "Community Edition" or "Open Source" version of V5. If your 30 days expire, you can use