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COMSOL Multiphysics vs KiCad

COMSOL Multiphysics logo

COMSOL Multiphysics

CAD

Finite element simulation built around coupling physics, with add-on modules licensed separately

From
On request
Rated
-
Full reviewWebsite
KiCad logo

KiCad

CAD

Free open source schematic capture and PCB layout with no seat, board size or layer limits

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only KiCad has a free tier, so it costs nothing to try first.
  • Each has a real cost: COMSOL Multiphysics the base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.; KiCad there is no vendor obligation behind the free software, so a blocking bug is escalated to a volunteer community unless you separately buy a contract from KiCad Services Corporation.
  • They diverge on capability: COMSOL Multiphysics covers Coupled multiphysics solving, KiCad covers Schematic capture.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which COMSOL Multiphysics and KiCad actually diverge.

Attributes where COMSOL Multiphysics and KiCad differ
AttributeCOMSOL MultiphysicsKiCad
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWindows, Linux, macOSWindows, macOS, Linux

Identical on both: 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 COMSOL Multiphysics

  • Coupled multiphysics solving
  • Equation-based modelling
  • Add-on module library
  • Application Builder
  • COMSOL Compiler and Server
  • CAD import and LiveLink
  • Parametric sweeps and optimisation
  • Cluster and cloud computing

Only in KiCad

  • Schematic capture
  • PCB layout
  • No design limits
  • 3D viewer
  • Manufacturing output
  • Scripting

What people use each for

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

COMSOL Multiphysics

  • Modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the fieldnot KiCad
  • Research work needing custom partial differential equations that no packaged solver in a mainstream tool providesnot KiCad
  • Packaging a validated model as an app so process engineers can run studies without learning the simulation toolnot KiCad
  • A department wanting shared concurrent access via a Floating Network Licence, with cluster runs at no extra licence costnot KiCad

KiCad

  • A hardware startup designing a multi-layer board without paying for an Altium seatnot COMSOL Multiphysics
  • A university teaching PCB design where per-student licences are unaffordablenot COMSOL Multiphysics
  • An open hardware project that needs design files anyone can open and modifynot COMSOL Multiphysics
  • An engineer prototyping a board at home who needs commercial rights on the outputnot COMSOL Multiphysics

Where each one falls short

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

COMSOL Multiphysics

  • The base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.
  • Perpetual licences renew maintenance at 20% of the then-current price each year, and because that percentage applies to the whole module stack the annual bill grows as your module list does and as list prices rise.
  • No pricing at all is published, so procurement cannot benchmark or budget without a sales engagement, and comparisons against Ansys or SolidWorks Simulation are effectively impossible before that point.
  • Named Single-User and CPU-locked licences do not share, so a team of six that bought individual licences ends up with idle seats while a Floating Network Licence would have covered them, and switching licence type is a commercial renegotiation.
  • Solving strongly coupled systems is memory hungry and slow, and models that look modest in the GUI routinely need tens of gigabytes of RAM, so hardware cost is a real and often underestimated part of adoption.

KiCad

  • There is no vendor obligation behind the free software, so a blocking bug is escalated to a volunteer community unless you separately buy a contract from KiCad Services Corporation.
  • High speed design support, including advanced constraint management, differential pair and impedance tooling, remains behind Altium and Cadence, which matters as soon as boards carry fast interfaces.
  • Rigid-flex and complex stack-up design is weak, so products with flex circuits usually need a commercial package.
  • Component library and part sourcing integrations are thinner than the commercial tools, so parts data and availability checking is manual work someone has to own.
  • Multi-engineer design data management is not provided; teams end up assembling Git workflows themselves, and merge handling on binary-adjacent design files is awkward.

Pricing, plan by plan

COMSOL Multiphysics

On request
  • COMSOL Multiphysics base licence$undefined/year
    • CPU-locked, Named Single-User or Floating Network licence types
    • Perpetual or term licensing
    • Perpetual includes updates and support for 12 months, then renews at 20% of current price
  • Academic licences$undefined/year
    • Class Kit Licence for up to 30 concurrent users per class
    • Academic Server Licence for up to 300 concurrent app users
    • Quote through the academic sales channel

KiCad

Free
  • KiCadFree
    • Full suite under GPL
    • No board size, layer or component limits
    • Commercial use permitted
  • Commercial support$undefined/year
    • Support contracts sold separately by KiCad Services Corporation
    • Priority issue handling and consulting
    • Not included with the free software

Which should you pick?

Choose COMSOL Multiphysics if

  • You need coupled multiphysics solving.
  • You work on Windows, Linux, macOS.
  • You also want equation-based modelling.
COMSOL Multiphysics review

Choose KiCad if

  • You need schematic capture.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want pcb layout.
KiCad review

Questions people ask

Is COMSOL Multiphysics or KiCad better?
Neither clearly leads. COMSOL Multiphysics starts at On request and KiCad at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, COMSOL Multiphysics or KiCad?
KiCad has a free tier; the other does not. Paid plans start at On request for COMSOL Multiphysics and Free for KiCad.
Does COMSOL Multiphysics or KiCad run on more platforms?
COMSOL Multiphysics runs on Windows, Linux, macOS. KiCad runs on Windows, macOS, Linux.
Can I use KiCad for free?
Yes. KiCad has a free tier, so you can try it without paying. COMSOL Multiphysics starts at On request.
What is COMSOL Multiphysics best used for?
COMSOL Multiphysics is most often used for modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field, research work needing custom partial differential equations that no packaged solver in a mainstream tool provides, packaging a validated model as an app so process engineers can run studies without learning the simulation tool, a department wanting shared concurrent access via a floating network licence, with cluster runs at no extra licence cost. Of those, modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field and research work needing custom partial differential equations that no packaged solver in a mainstream tool provides are not what KiCad is typically brought in for.
What can COMSOL Multiphysics do that KiCad cannot?
COMSOL Multiphysics covers Coupled multiphysics solving, Equation-based modelling, Add-on module library, Application Builder. KiCad covers Schematic capture, PCB layout, No design limits, 3D viewer.

Answered from the vendors’ own pages

COMSOL Multiphysics: Does the base licence include CFD or structural mechanics?

Only limited capability. Serious CFD, structural, RF and acoustics work each require the relevant add-on module at extra cost.

KiCad: Is KiCad really free for commercial work?

Yes. It is GPL licensed with no restriction on commercial use, board size, layer count or component count.

COMSOL Multiphysics: What does maintenance cost?

Perpetual licences include 12 months of updates and support, then renew at 20% of the then-current price per year.

KiCad: Can I buy support?

Yes, but not from the project. KiCad Services Corporation sells commercial support contracts separately; CERN moved to exactly that arrangement after ending its donation programme.

COMSOL Multiphysics: Which licence type should a team buy?

Floating Network if more than a couple of people use it, since it shares concurrency and includes cluster and cloud computing at no extra charge.

KiCad: How is development funded?

Through donations and sponsors administered via The Linux Foundation, plus contributed engineering time.

COMSOL Multiphysics: Is pricing published?

No. COMSOL publishes licence types but no prices; every purchase goes through a quote.

KiCad: Is it good enough to replace Altium?

For most low and medium speed boards yes. For high speed, rigid-flex and heavily constrained designs, the commercial tools still hold a clear lead.

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