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Design · head to head

Cadence Allegro vs Linearity Curve

Cadence Allegro logo

Cadence Allegro

Design

High-speed PCB design and constraint-driven routing for complex boards

From
On request
Rated
-
Full reviewWebsite
Linearity Curve logo

Linearity Curve

Design

Professional vector design for Mac and iPad

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Linearity Curve has a free tier, so it costs nothing to try first.
  • Each has a real cost: Cadence Allegro cadence publishes no prices; resellers quote Allegro X from roughly $5,700 per seat per year on lease or about $18,000 perpetual with support, so the entry cost is several times a mainstream PCB tool and budget approval usually needs a business case.; Linearity Curve limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support
  • They diverge on capability: Cadence Allegro covers Constraint Manager, Linearity Curve covers Vector editing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cadence Allegro and Linearity Curve actually diverge.

Attributes where Cadence Allegro and Linearity Curve differ
AttributeCadence AllegroLinearity Curve
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWindows, LinuxMac, Ios
FoundedUnknown2017

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 Cadence Allegro

  • Constraint Manager
  • High-speed routing
  • Rigid-flex and embedded components
  • 3D canvas
  • Sigrity integration
  • Team design
  • Manufacturing output

Only in Linearity Curve

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

What people use each for

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

Cadence Allegro

  • Routing a DDR5 or high-speed SerDes board where length matching and impedance rules must be enforced during layout, not checked afterwardsnot Linearity Curve
  • A rigid-flex design with multiple stackups that a general-purpose PCB tool cannot represent correctlynot Linearity Curve
  • A team of PCB designers working concurrently on partitions of one large backplanenot Linearity Curve
  • An organisation that already runs Sigrity or Clarity analysis and wants the layout constraints and the simulation to share one rule setnot Linearity Curve

Linearity Curve

  • Vector illustrationnot Cadence Allegro
  • Logo designnot Cadence Allegro
  • UI designnot Cadence Allegro
  • Print designnot Cadence Allegro

Where each one falls short

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

Cadence Allegro

  • Cadence publishes no prices; resellers quote Allegro X from roughly $5,700 per seat per year on lease or about $18,000 perpetual with support, so the entry cost is several times a mainstream PCB tool and budget approval usually needs a business case.
  • The learning curve is steep and the interface carries decades of accumulated convention, so a designer coming from another tool needs weeks to become productive and formal training is effectively mandatory.
  • Capability is split across product tiers and add-ons, so the feature you assumed was in Allegro may be an extra SKU, and the quoted configuration deserves a line-by-line check against your actual requirements.
  • Perpetual licences still carry annual maintenance to stay on current releases, and lapsing maintenance means paying to rejoin later, so the perpetual option is only cheaper over a long horizon.
  • Library and part data management is a project in its own right; teams that treat it as an afterthought end up with inconsistent footprints that surface as manufacturing defects rather than design errors.

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

Pricing, plan by plan

Cadence Allegro

On request
  • Allegro X PCB Designer$undefined/year
    • Constraint-driven layout and routing
    • High-speed and rigid-flex support
    • Sold as annual lease or perpetual licence
  • Allegro X Enterprise$undefined/year
    • Team design and concurrent editing
    • Integrated signal and power integrity
    • Data management and library control

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

Which should you pick?

Choose Cadence Allegro if

  • You need constraint manager.
  • You work on Windows, Linux.
  • You also want high-speed routing.
Cadence Allegro review

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

Questions people ask

Is Cadence Allegro or Linearity Curve better?
Neither clearly leads. Cadence Allegro starts at On request and Linearity Curve at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cadence Allegro or Linearity Curve?
Linearity Curve has a free tier; the other does not. Paid plans start at On request for Cadence Allegro and Free for Linearity Curve.
Does Cadence Allegro or Linearity Curve run on more platforms?
Cadence Allegro runs on Windows, Linux. Linearity Curve runs on Mac, Ios.
Can I use Linearity Curve for free?
Yes. Linearity Curve has a free tier, so you can try it without paying. Cadence Allegro starts at On request.
What is Cadence Allegro best used for?
Cadence Allegro is most often used for routing a ddr5 or high-speed serdes board where length matching and impedance rules must be enforced during layout, not checked afterwards, a rigid-flex design with multiple stackups that a general-purpose pcb tool cannot represent correctly, a team of pcb designers working concurrently on partitions of one large backplane, an organisation that already runs sigrity or clarity analysis and wants the layout constraints and the simulation to share one rule set. Of those, routing a ddr5 or high-speed serdes board where length matching and impedance rules must be enforced during layout, not checked afterwards and a rigid-flex design with multiple stackups that a general-purpose pcb tool cannot represent correctly are not what Linearity Curve is typically brought in for.
What can Cadence Allegro do that Linearity Curve cannot?
Cadence Allegro covers Constraint Manager, High-speed routing, Rigid-flex and embedded components, 3D canvas. Linearity Curve covers Vector editing, Auto Trace, Typography tools, Pen tool.

Answered from the vendors’ own pages

Cadence Allegro: Can I still buy a perpetual Allegro licence?

Yes. Cadence channel partners quote both annual lease and perpetual licences for Allegro X, with perpetual starting around $18,000 including support. OrCAD X is more commonly sold as lease only.

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
Cadence Allegro: How does Allegro differ from OrCAD?

OrCAD X is schematic capture and mainstream PCB layout; Allegro X is the high-speed implementation environment with the full constraint manager. They share a database, so moving up does not mean redrawing.

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
Cadence Allegro: Is there a free or student version?

Cadence offers time-limited evaluation and academic programmes, but there is no free commercial tier.

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
Cadence Allegro: Do I need Sigrity as well?

Only if you need signal or power integrity simulation. Allegro enforces constraints but does not simulate; Sigrity is a separate purchase.

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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