Design Tools · Updated 2026
Quick Verdict
Choose Lunacy if you are a Windows-based UI/UX designer who needs seamless Sketch file collaboration for free. Choose Affinity Designer if you are a professional graphic designer or illustrator seeking a powerful, one-time-purchase vector tool for a broader range of design work.
Lunacy and Affinity Designer serve distinct niches within the design tool landscape. Lunacy is a specialized, free desktop application focused on UI/UX and web design with native Sketch file support, making it ideal for Windows users in that workflow. Affinity Designer is a premium, one-time-purchase vector graphics powerhouse comparable to Adobe Illustrator, built for detailed illustration, branding, and multi-disciplinary design. Their core difference lies in Lunacy's free, platform-specific collaboration focus versus Affinity's paid, general-purpose vector artistry.
Side-by-Side Comparison
| Aspect | Lunacy | Affinity Designer |
|---|---|---|
| Pricing | Completely free | $69.99 one-time purchase |
| Ease of Use | Streamlined for UI/UX workflow, familiar to Sketch users | Professional-grade with a steeper learning curve, highly customizable |
| Scalability | Excellent for UI projects and teams; limited for complex illustration | Excellent for complex vector artwork, large documents, and print-ready assets |
| Integrations | Core integration is Sketch file compatibility; fewer third-party plugins | Robust file format support (PSD, AI, PDF, SVG); integrates with other Affinity apps |
| Open Source | No | No |
| Best For | Windows UI/UX designers needing free Sketch file collaboration | Professional graphic designers and illustrators seeking an Adobe Illustrator alternative |
Choose Lunacy if...
Lunacy is the better choice when your primary need is UI/UX and web design on Windows, especially within teams that use Sketch. Its free cost and flawless Sketch file compatibility make it an exceptional value for prototyping and screen design without subscription fees or compatibility headaches.
Choose Affinity Designer if...
Affinity Designer is the superior choice for professional illustrators, logo designers, and artists who require deep vector illustration tools and also handle print projects. Its one-time fee provides a cost-effective, industry-grade alternative to Illustrator for creating complex, scalable artwork beyond digital screens.
Product Details
Lunacy
A free, native desktop design software for UI/UX and vector graphics that works with Sketch files.
Pricing
Free
Best For
Windows-based UI/UX designers and teams seeking a free, professional tool with full Sketch file compatibility.
Key Features
Pros
- + Completely free for core features and personal use
- + Exceptional performance as a native Windows application
- + Full, reliable compatibility with Sketch files reduces workflow friction
Cons
- - Primarily designed for Windows, with limited macOS/Linux support
- - Smaller community and plugin ecosystem compared to industry leaders
- - Some advanced collaboration features are locked behind paid team plans
Affinity Designer
A professional vector graphic design application for creating illustrations, icons, UI/UX designs, and print projects.
Pricing
$69.99 one-time
Best For
Professional and aspiring graphic designers, illustrators, and UI/UX designers seeking a powerful, cost-effective alternative to Adobe Illustrator.
Key Features
Pros
- + One-time purchase with no subscription
- + Exceptionally fast and smooth performance
- + Excellent value for its comprehensive feature set
Cons
- - No native cloud-based collaboration features
- - Smaller third-party plugin ecosystem compared to Adobe
- - No built-in prototyping tools for UI/UX workflows