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CAD · head to head

KiCad vs MoI (Moment of Inspiration)

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
MoI (Moment of Inspiration) logo

MoI (Moment of Inspiration)

CAD

NURBS modeller bought once, built for designers rather than engineers

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only KiCad has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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.; MoI (Moment of Inspiration) it is developed by one person, so releases are years apart and there is no support organisation to escalate to when something blocks your work.
  • They diverge on capability: KiCad covers Schematic capture, MoI (Moment of Inspiration) covers Direct NURBS modelling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which KiCad and MoI (Moment of Inspiration) actually diverge.

Attributes where KiCad and MoI (Moment of Inspiration) differ
AttributeKiCadMoI (Moment of Inspiration)
Starting priceFreeOn request
Pricing modelOpen source, no licence feeOne-time purchase
Free tierYesNo
PlatformsWindows, macOS, LinuxWindows, macOS

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 KiCad

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

Only in MoI (Moment of Inspiration)

  • Direct NURBS modelling
  • Clean mesh export
  • Pen-oriented interface
  • Boolean toolset
  • STEP and IGES exchange
  • Scriptable commands

What people use each for

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

KiCad

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

MoI (Moment of Inspiration)

  • Converting CAD surfaces into clean quad meshes for a polygon or sculpting applicationnot KiCad
  • Modelling hard-surface concept designs where form matters and engineering documentation does notnot KiCad
  • Working on older or low-specification hardware that will not run mainstream CADnot KiCad
  • Buying a modelling tool outright rather than committing to a recurring CAD subscriptionnot KiCad

Where each one falls short

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

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.

MoI (Moment of Inspiration)

  • It is developed by one person, so releases are years apart and there is no support organisation to escalate to when something blocks your work.
  • There is no parametric history and no assembly structure, so a late design change means remodelling rather than editing a feature.
  • It produces no dimensioned drawings or manufacturing documentation, so anything heading for production needs a second package for the paperwork.
  • Exchange is limited to surface formats such as STEP and IGES with no native interoperability with mainstream MCAD systems, so it sits at the edge of an engineering pipeline rather than inside it.
  • Each major version is a fresh purchase, and the long gaps between versions mean a fix or a feature you need can be several years away with no interim release.

Pricing, plan by plan

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

MoI (Moment of Inspiration)

On request
  • MoI$undefined/year
    • Perpetual licence for one major version
    • Windows and macOS
    • Paid upgrade for each subsequent major version

Which should you pick?

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

Choose MoI (Moment of Inspiration) if

  • You need direct nurbs modelling.
  • You work on Windows, macOS.
  • You also want clean mesh export.
MoI (Moment of Inspiration) review

Questions people ask

Is KiCad or MoI (Moment of Inspiration) better?
Neither clearly leads. KiCad starts at Free and MoI (Moment of Inspiration) at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KiCad or MoI (Moment of Inspiration)?
KiCad has a free tier; the other does not. Paid plans start at Free for KiCad and On request for MoI (Moment of Inspiration).
Does KiCad or MoI (Moment of Inspiration) run on more platforms?
KiCad runs on Windows, macOS, Linux. MoI (Moment of Inspiration) runs on Windows, macOS.
Can I use KiCad for free?
Yes. KiCad has a free tier, so you can try it without paying. MoI (Moment of Inspiration) starts at On request.
What is KiCad best used for?
KiCad is most often used for a hardware startup designing a multi-layer board without paying for an altium seat, a university teaching pcb design where per-student licences are unaffordable, an open hardware project that needs design files anyone can open and modify, an engineer prototyping a board at home who needs commercial rights on the output. Of those, a hardware startup designing a multi-layer board without paying for an altium seat and a university teaching pcb design where per-student licences are unaffordable are not what MoI (Moment of Inspiration) is typically brought in for.
What can KiCad do that MoI (Moment of Inspiration) cannot?
KiCad covers Schematic capture, PCB layout, No design limits, 3D viewer. MoI (Moment of Inspiration) covers Direct NURBS modelling, Clean mesh export, Pen-oriented interface, Boolean toolset.

Answered from the vendors’ own pages

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.

MoI (Moment of Inspiration): Is it a subscription?

No. It is bought outright per major version, and each new major version is a separate paid upgrade.

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.

MoI (Moment of Inspiration): Can it replace Rhino?

For direct form modelling, often yes. For anything needing Grasshopper, drawings, plugins or engineering interoperability, no.

KiCad: How is development funded?

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

MoI (Moment of Inspiration): Why do 3D artists use it alongside other tools?

Its NURBS to polygon conversion produces cleaner meshes than most CAD exporters, which saves retopology work downstream.

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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