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OpenSCAD vs Unity

OpenSCAD logo

OpenSCAD

Software

The programmers solid 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite
Unity logo

Unity

Software

Create beautiful interactive content with the world's leading real-time engine

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OpenSCAD script-based workflow, not interactive design interface; Unity unity Personal is free only for businesses with under $200,000 in funding or annual revenue; above that a Pro subscription is required
  • They diverge on capability: OpenSCAD covers Script-based modeling, Unity covers Visual editor.

Where they differ

Only the attributes on which OpenSCAD and Unity actually diverge.

Attributes where OpenSCAD and Unity differ
AttributeOpenSCADUnity
Pricing modelopen-sourcefreemium
PlatformsWindows, macOS, Linux, WebAssemblyWindows, Macos, Linux, Ios, Android, Webgl
Founded20092004

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in OpenSCAD

  • Script-based modeling
  • CSG operations
  • 2D to 3D extrusion
  • Parameterization
  • STL export
  • Preview
  • 3D printers
  • Slicers

Only in Unity

  • Visual editor
  • Physics engine (PhysX)
  • Animation system
  • Particle system
  • Built-in audio engine
  • Scripting with C#
  • Asset Store
  • Version control integration

What people use each for

The jobs each tool is most often brought in to do.

OpenSCAD

  • Parametric 3D design for manufacturing and 3D printingnot Unity
  • Technical design with scripted control over geometrynot Unity
  • Procedural model generationnot Unity

Unity

  • Building 2D and 3D games for desktop, mobile, web, AR and VRnot OpenSCAD
  • Shipping console titles under a Pro or Enterprise licencenot OpenSCAD
  • Real time 3D for manufacturing, automotive and retail visualisationnot OpenSCAD
  • Live operations and in-app purchase management for mobile gamesnot OpenSCAD

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

OpenSCAD

  • Script-based workflow, not interactive design interface
  • Limited to constructive solid geometry and 2D extrusion modelling
  • Not suitable for artistic 3D modelling or computer animation
  • Complex build dependencies (Qt, CGAL, Boost)

Unity

  • Unity Personal is free only for businesses with under $200,000 in funding or annual revenue; above that a Pro subscription is required
  • Unity Pro costs $210.00 per month or $2,310.00 per year per seat
  • Businesses with more than $25M in annual revenue are required to be on Unity Enterprise, which is custom priced and requires contacting sales
  • Deploying to game consoles and to Apple Vision Pro requires Unity Pro or above
  • Splash screen customization is not available on Unity Personal
  • Unity Personal is licensed for gaming and entertainment applications only
  • Read-only engine source code access is an Enterprise feature and carries an additional cost
  • Asset Manager storage on Personal is capped at 10 GB per organization
  • Unity AI tools are free for a 14 day trial on Personal, after which a paid subscription is required
  • Enterprise terms note that minimum subscription or spending commitments may apply

Pricing, plan by plan

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

Unity

Free
  • PersonalFree
    • Full engine access
    • Asset Store access
    • Community support
  • Professional$399/month
    • All Personal features
    • Priority support
    • Advanced analytics

Which should you pick?

Choose OpenSCAD if

  • You need script-based modeling.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, WebAssembly.
  • You also want csg operations.
OpenSCAD review

Choose Unity if

  • You need visual editor.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Webgl.
  • You also want physics engine (physx).
Unity review

Questions people ask

Is OpenSCAD or Unity better?
Neither clearly leads. OpenSCAD starts at Free and Unity at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenSCAD or Unity?
OpenSCAD starts at Free and Unity at Free.
Does OpenSCAD or Unity run on more platforms?
OpenSCAD runs on Windows, macOS, Linux, WebAssembly. Unity runs on Windows, Macos, Linux, Ios, Android, Webgl.
Can I use OpenSCAD for free?
Both have a free tier, so you can try either at no cost before committing.
What is OpenSCAD best used for?
OpenSCAD is most often used for parametric 3d design for manufacturing and 3d printing, technical design with scripted control over geometry, procedural model generation. Of those, parametric 3d design for manufacturing and 3d printing and technical design with scripted control over geometry are not what Unity is typically brought in for.
What can OpenSCAD do that Unity cannot?
OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization. Unity covers Visual editor, Physics engine (PhysX), Animation system, Particle system.
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