If you need a precision modeler but cannot fit MoI 3D into your budget after the trial, consider these high-quality free alternatives:
Enhanced stability for complex boolean operations (filleting and joining).
If you are transitioning from V4 or looking to jump in for the first time, V5 introduces several "quality of life" upgrades that make it worth the download: moi 3d v5 free
You can download a version that is 100% functional for 30 days. This includes saving and exporting.
Greatly improved workflow for those using vector tools like Illustrator or Affinity Designer for 2D profiles. If you need a precision modeler but cannot
A fully open-source parametric modeler. It has a steeper learning curve but offers professional-grade NURBS tools for $0.
A massive update that allows you to import SubD (mesh) files and convert them into smooth, editable NURBS surfaces. Greatly improved workflow for those using vector tools
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
V5 runs natively on M1/M2/M3 chips, offering a significant speed boost for Mac users. How to Download MoI 3D V5 Safely