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Design · head to head

Affinity Designer vs PaintTool SAI

Affinity Designer logo

Affinity Designer

Design

Professional graphic design software for everyone

From
$69.99/one-time
Rated
-
Full reviewWebsite
P

PaintTool SAI

Design

Lightweight digital painting and illustration software for Windows

From
5500/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Affinity Designer premium AI features require separate Canva subscription; pricing for those plans not disclosed; PaintTool SAI windows-only software with no native Mac or Linux version.
  • They diverge on capability: Affinity Designer covers Vector drawing, PaintTool SAI covers Pressure-Sensitive Tablet Support.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Affinity Designer and PaintTool SAI actually diverge.

Attributes where Affinity Designer and PaintTool SAI differ
AttributeAffinity DesignerPaintTool SAI
Starting price$69.99/one-time5500/month
PlatformsWindows, Macos, Ioswindows
Founded1994Unknown

Identical on both: pricing model (one-time), free tier (No), 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 Affinity Designer

  • Vector drawing
  • Bezier tools
  • Gradient tools
  • Typography
  • Pixel-perfect editing
  • Artboards
  • Symbols
  • Non-destructive effects

Only in PaintTool SAI

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

What people use each for

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

Affinity Designer

  • Logo designnot PaintTool SAI
  • Vector illustrationnot PaintTool SAI
  • Icon designnot PaintTool SAI
  • Brandingnot PaintTool SAI

PaintTool SAI

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

Where each one falls short

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

Affinity Designer

  • Premium AI features require separate Canva subscription; pricing for those plans not disclosed
  • Core Affinity tools are free but Canva premium add-on costs are not detailed

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.

Pricing, plan by plan

Affinity Designer

$69.99/one-time
  • Standard$69.99/one-time
    • Full version
    • All features
    • Lifetime updates

PaintTool SAI

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

Which should you pick?

Choose Affinity Designer if

  • You need vector drawing.
  • You work on Windows, Macos, Ios.
  • You also want bezier tools.
Affinity Designer review

Choose PaintTool SAI if

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

Questions people ask

Is Affinity Designer or PaintTool SAI better?
Neither clearly leads. Affinity Designer starts at $69.99/one-time and PaintTool SAI at 5500/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Affinity Designer or PaintTool SAI?
Affinity Designer starts at $69.99/one-time and PaintTool SAI at 5500/month.
Does Affinity Designer or PaintTool SAI run on more platforms?
Affinity Designer runs on Windows, Macos, Ios. PaintTool SAI runs on windows.
What is Affinity Designer best used for?
Affinity Designer is most often used for logo design, vector illustration, icon design, branding. Of those, logo design and vector illustration are not what PaintTool SAI is typically brought in for.
What can Affinity Designer do that PaintTool SAI cannot?
Affinity Designer covers Vector drawing, Bezier tools, Gradient tools, Typography. PaintTool SAI covers Pressure-Sensitive Tablet Support, Anti-Aliased Brushes, 16-bit ARGB Color Channels, Lightweight Performance.

Answered from the vendors’ own pages

Affinity Designer: Is Affinity Designer free?

Yes, Affinity Designer is completely free. Every tool in the Pixel, Vector, and Layout studios, plus all customization and export features, are available at no cost with no seat count restrictions or payment requirements.

Source
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
Affinity Designer: Are there premium features available in Affinity by Canva?

Affinity by Canva includes optional AI features available through separate Canva premium subscriptions (Pro, Business, Enterprise, Education tiers). Core design tools remain free; premium AI functionality requires a Canva subscription.

Source
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
Affinity Designer: Do I need to pay for Affinity Designer updates?

No. Affinity by Canva receives free updates and new features over time. The core application and all design, editing, and layout tools are updated at no additional cost.

Source
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
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