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Design · head to head

PaintTool SAI vs Womp

P

PaintTool SAI

Design

Lightweight digital painting and illustration software for Windows

From
5500/month
Rated
-
Full reviewWebsite
Womp logo

Womp

Design

Browser 3D modelling built on blended implicit surfaces for non-specialists

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Womp has a free tier, so it costs nothing to try first.
  • Each has a real cost: PaintTool SAI windows-only software with no native Mac or Linux version.; Womp everything runs through the browser graphics stack, so an older laptop with integrated graphics hits frame rate and render limits fast and there is no local rendering fallback.
  • They diverge on capability: PaintTool SAI covers Pressure-Sensitive Tablet Support, Womp covers Implicit surface modelling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which PaintTool SAI and Womp actually diverge.

Attributes where PaintTool SAI and Womp differ
AttributePaintTool SAIWomp
Starting price5500/monthFree
Pricing modelone-timePer user per month
Free tierNoYes
PlatformswindowsWeb

Identical on both: user rating (Not yet rated), category (Design).

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 PaintTool SAI

  • Pressure-Sensitive Tablet Support
  • Anti-Aliased Brushes
  • 16-bit ARGB Color Channels
  • Lightweight Performance
  • Crash Data Protection

Only in Womp

  • Implicit surface modelling
  • Browser rendering
  • Material library
  • Scene sharing
  • Export
  • Templates

What people use each for

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

PaintTool SAI

  • Digital illustration and manga artnot Womp
  • Line art and inking with pressure-sensitive pensnot Womp
  • Lightweight painting on lower-spec computersnot Womp
  • Character and concept art sketchingnot Womp

Womp

  • Producing 3D product or icon visuals in a design team with no 3D specialistnot PaintTool SAI
  • Making a set of consistent 3D illustrations for a website or campaign in a daynot PaintTool SAI
  • Prototyping a form quickly for discussion before it is remodelled properly in CADnot PaintTool SAI
  • Teaching 3D concepts without installing software on managed machinesnot PaintTool SAI

Where each one falls short

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

PaintTool SAI

  • Windows-only software with no native Mac or Linux version.
  • Only supports 32-bit operation, lacking modern 64-bit performance benefits.
  • Lacks the advanced brush engine customization and layer effects found in tools like Photoshop or Clip Studio Paint.
  • No cloud sync or mobile app, unlike many modern illustration tools.

Womp

  • Everything runs through the browser graphics stack, so an older laptop with integrated graphics hits frame rate and render limits fast and there is no local rendering fallback.
  • Implicit modelling gives no control over the exported mesh, so the output topology is unsuitable for rigging, animation or subdivision work downstream.
  • Nothing is dimensionally accurate, so a form designed here has to be remodelled in CAD before it can be manufactured.
  • Scenes live in the vendor account, so if the service changes or closes, the only copies you hold are whatever you exported in advance.
  • The material and lighting set is deliberately simplified, which caps art direction and makes the output visually recognisable as having come from Womp.

Pricing, plan by plan

PaintTool SAI

5500/month
  • Standard License$5500/month
    • Perpetual license
    • All 1.x.x minor updates
    • Free upgrade path to version 2

Womp

Free
  • Free$undefined/month
    • Public scenes
    • Limited render resolution
    • Limited storage
  • Pro$undefined/month
    • Private scenes
    • Higher render resolution
    • Mesh export and larger storage

Which should you pick?

Choose PaintTool SAI if

  • You need pressure-sensitive tablet support.
  • You work on windows.
  • You also want anti-aliased brushes.
PaintTool SAI review

Choose Womp if

  • You need implicit surface modelling.
  • You want to start without paying.
  • You also want browser rendering.
Womp review

Questions people ask

Is PaintTool SAI or Womp better?
Neither clearly leads. PaintTool SAI starts at 5500/month and Womp at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PaintTool SAI or Womp?
Womp has a free tier; the other does not. Paid plans start at 5500/month for PaintTool SAI and Free for Womp.
Does PaintTool SAI or Womp run on more platforms?
PaintTool SAI runs on windows. Womp runs on Web.
Can I use Womp for free?
Yes. Womp has a free tier, so you can try it without paying. PaintTool SAI starts at 5500/month.
What is PaintTool SAI best used for?
PaintTool SAI is most often used for digital illustration and manga art, line art and inking with pressure-sensitive pens, lightweight painting on lower-spec computers, character and concept art sketching. Of those, digital illustration and manga art and line art and inking with pressure-sensitive pens are not what Womp is typically brought in for.
What can PaintTool SAI do that Womp cannot?
PaintTool SAI covers Pressure-Sensitive Tablet Support, Anti-Aliased Brushes, 16-bit ARGB Color Channels, Lightweight Performance. Womp covers Implicit surface modelling, Browser rendering, Material library, Scene sharing.

Answered from the vendors’ own pages

PaintTool SAI: Is there a free trial for PaintTool SAI?

Yes, PaintTool SAI offers a 31-day free trial with full functionality before requiring purchase of a license.

Source
Womp: Do I need to know 3D to use it?

No. That is the point of the modelling approach; there is no topology, edge flow or subdivision to understand.

PaintTool SAI: What does the license cover?

The one-time 5,500 JPY purchase provides a perpetual license covering all minor updates within version 1.x.x; a major version 2 upgrade is offered for free.

Source
Womp: Can I use the meshes in Blender or a game engine?

You can export them, but the topology comes from tessellating an implicit surface, so it is not suitable for rigging, animation or subdivision without a retopology pass.

PaintTool SAI: What operating systems are supported?

PaintTool SAI runs on Windows XP through Windows 11, but only in 32-bit mode, requiring at least a 450MHz Pentium processor and 256MB of RAM.

Source
Womp: Is it accurate enough for manufacturing?

No. It is a visual tool. Anything to be made needs remodelling in CAD.

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