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Design · head to head

Linearity Curve vs Spline

Linearity Curve logo

Linearity Curve

Design

Professional vector design for Mac and iPad

From
Free
Rated
-
Full reviewWebsite
Spline logo

Spline

Design

3D design tool for the web

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Linearity Curve limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support; Spline aI generation features produce inconsistent and often distorted results, failing at basic depth perception tasks
  • They diverge on capability: Linearity Curve covers Vector editing, Spline covers 3D modeling.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Linearity Curve and Spline actually diverge.

Attributes where Linearity Curve and Spline differ
AttributeLinearity CurveSpline
Pricing modelUnknownfreemium
PlatformsMac, IosWeb, iOS, Android, visionOS
Founded20172020

Identical on both: starting price (Free), free tier (Yes), 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 Linearity Curve

  • Vector editing
  • Auto Trace
  • Typography tools
  • Pen tool
  • iCloud sync
  • Adobe Creative Cloud
  • Sketch
  • Figma

Only in Spline

  • 3D modeling
  • Real-time collaboration
  • Animations
  • Interactions
  • Code export
  • React
  • Next.js
  • Webflow

What people use each for

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

Linearity Curve

  • Vector illustrationnot Spline
  • Logo designnot Spline
  • UI designnot Spline
  • Print designnot Spline

Spline

  • Web 3D experiencesnot Linearity Curve
  • Interactive prototypesnot Linearity Curve
  • Product visualizationnot Linearity Curve

Where each one falls short

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

Linearity Curve

  • Limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support
  • Requires annual or monthly subscription for commercial use, unlike competitors offering lifetime purchase options
  • Free plan is severely limited to only 3 Curve files and 5GB storage

Spline

  • AI generation features produce inconsistent and often distorted results, failing at basic depth perception tasks
  • Limited to simpler designs - not suitable for high-poly, detailed production models
  • Performance degrades with complex scenes containing many objects and materials
  • Limited non-Apple platform coverage compared to cross-platform design tools
  • Tutorials are either too fast for beginners or too basic for advanced users

Pricing, plan by plan

Linearity Curve

Free
  • StarterFree
    • 50 lifetime credits
    • 3 Curve files
    • 5GB storage
  • Pro$11.99/month
    • 250 monthly credits
    • Unlimited files
    • 100GB storage
  • Business$65/month
    • 500 monthly credits
    • 500GB storage
    • Brand management

Spline

Free
  • FreeFree
    • Unlimited projects
    • Basic exports
    • Community support
  • Pro$9/month
    • Advanced exports
    • Custom domains
    • Password protection
  • Team$19/month
    • Team collaboration
    • Version control
    • Admin controls

Which should you pick?

Choose Linearity Curve if

  • You need vector editing.
  • You want to start without paying.
  • You work on Mac, Ios.
  • You also want auto trace.
Linearity Curve review

Choose Spline if

  • You need 3d modeling.
  • You want to start without paying.
  • You work on Web, iOS, Android, visionOS.
  • You also want real-time collaboration.
Spline review

Questions people ask

Is Linearity Curve or Spline better?
Neither clearly leads. Linearity Curve starts at Free and Spline at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Linearity Curve or Spline?
Linearity Curve starts at Free and Spline at Free.
Does Linearity Curve or Spline run on more platforms?
Linearity Curve runs on Mac, Ios. Spline runs on Web, iOS, Android, visionOS.
Can I use Linearity Curve for free?
Both have a free tier, so you can try either at no cost before committing.
What is Linearity Curve best used for?
Linearity Curve is most often used for vector illustration, logo design, ui design, print design. Of those, vector illustration and logo design are not what Spline is typically brought in for.
What can Linearity Curve do that Spline cannot?
Linearity Curve covers Vector editing, Auto Trace, Typography tools, Pen tool. Spline covers 3D modeling, Real-time collaboration, Animations, Interactions.

Answered from the vendors’ own pages

Linearity Curve: Does Linearity Curve have a free plan?

Yes, Linearity offers a free Starter plan with 50 lifetime credits, 1 basic brand kit, and 5GB cloud storage. No credit card is required to access the free tier.

Source
Spline: What is Spline's pricing?

Spline offers a Free plan with watermarked web exports, Starter at $12/month (billed annually) removing watermarks, Professional at $20/month with unlimited projects, and Enterprise with custom pricing. Viewers are unlimited on all plans.

Source
Linearity Curve: Can I use Linearity Curve on multiple devices?

Yes, Linearity Curve is available on Mac, iPad, and iPhone, with real-time collaboration allowing teams to see changes instantly across devices.

Source
Spline: Can Spline export 3D models to other tools?

Spline's export/import format support is more limited compared to traditional 3D tools like Blender. It focuses on web-first exports and native app code generation.

Source
Linearity Curve: What file formats can I export from Linearity Curve?

Linearity Curve supports exporting to industry-standard formats including .ai, SVG, PDF, PNG, JPG, and TIFF, making it compatible with other design tools.

Source
Linearity Curve: Does Linearity Curve have AI-powered vectorization?

Yes, Linearity Curve includes an Auto Trace feature with three modes (Sketch, Photography, Illustration) that uses AI to instantly vectorize images into editable paths. It also includes AI-powered background removal.

Source
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