Lunacy vs Principle
No leader: the top candidate Lunacy has only 0.25 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for mockup tools. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Lunacy
Lunacy is a desktop design tool for Windows, macOS, and Linux that combines professional design features with team collaboration. It includes auto-layout for responsive designs, interactive prototyping, component systems, real-time synchronization with team members, and full offline editing without requiring internet connectivity.
Principle
A native macOS application for designing animated and interactive user interfaces across web, mobile, and desktop platforms, featuring keyframe-based animation controls and automatic transitions between artboards.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Lunacy
From $9/month when billed annually, or $12/month on a monthly subscription
Principle
$129 per computer. Renewal available for $99 to access new features released after initial purchase.
- Principle License$129 per computer, perpetual license
- Timeline animation with keyframes and easing customization
- Multi-artboard screen flow design
- Automatic animations between named layers on different artboards
- Hover and mouse wheel event support
- Import from Figma and Sketch with intelligent merging
- +3 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- Figma
- Sketch
Lunacy
- Figma
- Sketch
Principle
- Figma
- Sketch
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.