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CAD · head to head

Twinmotion vs SolveSpace

Twinmotion logo

Twinmotion

CAD

Real-time visualization for architecture

From
Free
Rated
-
Full reviewWebsite
S

SolveSpace

CAD

Open source parametric CAD with a constraint solver in a few megabytes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Twinmotion epic Games' own pricing announcement (unrealengine.com/twinmotion.com) sets an individual Twinmotion seat at $445 per year, and the bundled Unreal Subscription covering Twinmotion, Unreal Engine and RealityCapture together at $1,850 per seat per year, once a company's annual gross revenue exceeds $1,000,000 USD; below that threshold the same software is free, including for commercial use, which makes list price highly dependent on company size rather than usage.; SolveSpace the in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • They diverge on capability: Twinmotion covers Real-time rendering, SolveSpace covers Constraint solver.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Twinmotion and SolveSpace actually diverge.

Attributes where Twinmotion and SolveSpace differ
AttributeTwinmotionSolveSpace
Pricing modelsubscriptionOpen source, no licence fee
PlatformsWindows, MacOSWindows, macOS, Linux
Founded1991Unknown

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

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 Twinmotion

  • Real-time rendering
  • Easy import
  • Vegetation
  • Phasing
  • VR export
  • Video export
  • Direct link to CAD
  • Revit

Only in SolveSpace

  • Constraint solver
  • Solid modelling
  • Assemblies
  • Export formats
  • Cross-platform
  • Small footprint

What people use each for

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

Twinmotion

  • Architectural visualizationnot SolveSpace
  • Design presentationnot SolveSpace

SolveSpace

  • Designing 3D printed parts on a machine that cannot run mainstream CADnot Twinmotion
  • Teaching constraint-based parametric modelling without buying licences for a classroomnot Twinmotion
  • Checking that a mechanical linkage moves as intended before cutting metalnot Twinmotion
  • Producing dimensionally accurate STEP or STL output from a small open source toolchainnot Twinmotion

Where each one falls short

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

Twinmotion

  • Epic Games' own pricing announcement (unrealengine.com/twinmotion.com) sets an individual Twinmotion seat at $445 per year, and the bundled Unreal Subscription covering Twinmotion, Unreal Engine and RealityCapture together at $1,850 per seat per year, once a company's annual gross revenue exceeds $1,000,000 USD; below that threshold the same software is free, including for commercial use, which makes list price highly dependent on company size rather than usage.

SolveSpace

  • The in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • There is no proper drawing and dimensioning workflow, so manufacturing documentation has to be produced in another application.
  • Development is volunteer-led and intermittent; long gaps between releases are normal and there is no support contract available at any price.
  • Assembly-level import of external CAD is very limited, so it does not fit a supply chain that exchanges native or assembly-level models with suppliers.
  • The interface follows its own conventions rather than mainstream CAD ones, so existing SolidWorks or Fusion users spend time unlearning habits for a tool with a lower ceiling.

Pricing, plan by plan

Twinmotion

Free
  • FreeFree
    • Non-commercial
  • Professional$499/month
    • Commercial use

SolveSpace

Free
  • SolveSpaceFree
    • Full application under the GPL
    • No seat limit
    • Windows, macOS and Linux builds

Which should you pick?

Choose Twinmotion if

  • You need real-time rendering.
  • You want to start without paying.
  • You work on Windows, MacOS.
  • You also want easy import.
Twinmotion review

Choose SolveSpace if

  • You need constraint solver.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want solid modelling.
SolveSpace review

Questions people ask

Is Twinmotion or SolveSpace better?
Neither clearly leads. Twinmotion starts at Free and SolveSpace at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Twinmotion or SolveSpace?
Twinmotion starts at Free and SolveSpace at Free.
Does Twinmotion or SolveSpace run on more platforms?
Twinmotion runs on Windows, MacOS. SolveSpace runs on Windows, macOS, Linux.
Can I use Twinmotion for free?
Both have a free tier, so you can try either at no cost before committing.
What is Twinmotion best used for?
Twinmotion is most often used for architectural visualization, design presentation. Of those, architectural visualization and design presentation are not what SolveSpace is typically brought in for.
What can Twinmotion do that SolveSpace cannot?
Twinmotion covers Real-time rendering, Easy import, Vegetation, Phasing. SolveSpace covers Constraint solver, Solid modelling, Assemblies, Export formats.

Answered from the vendors’ own pages

SolveSpace: Is it really free for commercial work?

Yes. It is released under the GPL with no licence fee and no seat limit. Support is community only.

SolveSpace: Can it replace Fusion 360 or SolidWorks?

No. It handles parts and simple assemblies well. Complex geometry, drawings and supply chain interoperability are outside its range.

SolveSpace: What hardware does it need?

Very little. It runs on old laptops and small Linux machines where mainstream CAD will not start.

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