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Software · head to head

Linearity Curve vs Stampli

Linearity Curve logo

Linearity Curve

Software

Professional vector design for Mac and iPad

From
Free
Rated
-
Full reviewWebsite
Stampli logo

Stampli

Software

AI-powered accounts payable automation

From
$29/month
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: Linearity Curve limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support; Stampli pricing is by quote only: the pricing page publishes no rate, no minimum and no cost driver, offering only a Request a Quote form
  • They diverge on capability: Linearity Curve covers Vector editing, Stampli covers AI invoice processing.

Where they differ

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

Attributes where Linearity Curve and Stampli differ
AttributeLinearity CurveStampli
Starting priceFree$29/month
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsMac, IosWeb, Ios, Android
Founded20172014

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

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 Stampli

  • AI invoice processing
  • Approval workflows
  • Vendor management
  • Payment processing
  • Audit trails
  • NetSuite
  • Sage Intacct
  • QuickBooks

Both cover

  • Ios support

What people use each for

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

Linearity Curve

  • Vector illustrationnot Stampli
  • Logo designnot Stampli
  • UI designnot Stampli
  • Print designnot Stampli

Stampli

  • Automating accounts payable invoice capture and codingnot Linearity Curve
  • Routing invoice approvals with discussion held against each invoicenot Linearity Curve
  • Paying suppliers and issuing virtual cards from the AP workflownot 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

Stampli

  • Pricing is by quote only: the pricing page publishes no rate, no minimum and no cost driver, offering only a Request a Quote form
  • Payments and card products are sold alongside the core AP automation rather than being separately priced on the public site

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

Stampli

$29/month
  • Essential$undefined/month
    • Invoice processing
    • Basic approvals
    • Email notifications
  • Professional$undefined/month
    • AI-powered coding
    • Advanced workflows
    • ERP integrations
  • Enterprise$undefined/month
    • Custom workflows
    • API access
    • Dedicated support

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 Stampli if

  • You need ai invoice processing.
  • You work on Web, Ios, Android.
  • You also want approval workflows.
Stampli review

Questions people ask

Is Linearity Curve or Stampli better?
Neither clearly leads. Linearity Curve starts at Free and Stampli at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Linearity Curve or Stampli?
Linearity Curve has a free tier; the other does not. Paid plans start at Free for Linearity Curve and $29/month for Stampli.
Does Linearity Curve or Stampli run on more platforms?
Linearity Curve runs on Mac, Ios. Stampli runs on Web, Ios, Android.
Can I use Linearity Curve for free?
Yes. Linearity Curve has a free tier, so you can try it without paying. Stampli starts at $29/month.
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 Stampli is typically brought in for.
What can Linearity Curve do that Stampli cannot?
Linearity Curve covers Vector editing, Auto Trace, Typography tools, Pen tool. Stampli covers AI invoice processing, Approval workflows, Vendor management, Payment processing. Both handle Ios support.

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
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
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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