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Design · head to head

Principle vs Womp

P

Principle

Design

Animate your ideas, design better apps

From
$129/one-time
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: Principle macOS only with no Windows or Linux editor available; 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: Principle covers Timeline-based animation, Womp covers Implicit surface modelling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Principle and Womp actually diverge.

Attributes where Principle and Womp differ
AttributePrincipleWomp
Starting price$129/one-timeFree
Pricing modelUnknownPer user per month
Free tierNoYes
PlatformsmacOSWeb
Founded2015Unknown

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 Principle

  • Timeline-based animation
  • Interactive prototypes
  • Touch gestures
  • Component reuse
  • Video export
  • Sketch import
  • Figma import
  • Driver animations

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.

Principle

  • Mobile app prototypesnot Womp
  • Micro-interactionsnot Womp
  • Animation designnot Womp
  • User flow designnot Womp
  • Gesture-based interfacesnot Womp

Womp

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

Where each one falls short

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

Principle

  • macOS only with no Windows or Linux editor available
  • No vector morphing capability for complex shape transformations
  • Limited asset creation tools; cannot create vectors or shapes directly within Principle
  • Sketch import flattens certain properties including paths, fills, borders, masks, blur effects, and text layers
  • Limited variable support, logical loops, and data input capabilities compared to tools like ProtoPie or Origami

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

Principle

$129/one-time
  • License$129/one-time
    • One year of upgrades
    • Full access to all features
  • Upgrade License$99/year
    • Annual renewal for ongoing upgrades

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 Principle if

  • You need timeline-based animation.
  • You work on macOS.
  • You also want interactive prototypes.
Principle 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 Principle or Womp better?
Neither clearly leads. Principle starts at $129/one-time and Womp at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Principle or Womp?
Womp has a free tier; the other does not. Paid plans start at $129/one-time for Principle and Free for Womp.
Does Principle or Womp run on more platforms?
Principle runs on macOS. Womp runs on Web.
Can I use Womp for free?
Yes. Womp has a free tier, so you can try it without paying. Principle starts at $129/one-time.
What is Principle best used for?
Principle is most often used for mobile app prototypes, micro-interactions, animation design, user flow design. Of those, mobile app prototypes and micro-interactions are not what Womp is typically brought in for.
What can Principle do that Womp cannot?
Principle covers Timeline-based animation, Interactive prototypes, Touch gestures, Component reuse. Womp covers Implicit surface modelling, Browser rendering, Material library, Scene sharing.

Answered from the vendors’ own pages

Principle: Does Principle run on Windows or Linux?

No. Principle is macOS only and runs on Intel and Apple Silicon Macs. There is no Windows or Linux editor available; however, prototypes can be shared and viewed on any platform via web link.

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.

Principle: What is the cost of Principle?

Principle costs $129 for a one-time purchase with 1 year of upgrades included. After 1 year, upgrade licenses cost $99/year. A 14-day free trial is available with all features included.

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.

Principle: Can I import designs from Figma or Sketch into Principle?

Yes. Principle supports importing designs from Figma and Sketch with intelligent merging of re-imported files. Some Sketch properties such as paths, fills, borders, blur effects, masks, and text layers are flattened upon import.

Source
Womp: Is it accurate enough for manufacturing?

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

Principle: How do I share Principle prototypes with others?

Prototypes can be shared via web link with one click (File > Export > Share to Web). Recipients can view and interact with prototypes in any browser on any platform: Windows, macOS, Linux, Android, or iOS. No installation required.

Source
Principle: Can I create vector shapes and morphing animations in Principle?

Principle does not support vector morphing, where vector objects transform into other vector shapes. It also has limited asset creation capabilities and editing is restricted to basic operations like scale and rotate.

Source
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