At a Glance
Ideal for
Designers who need to create detailed motion prototypes
Consider that
Mac only
Typical cost: Free
Best For
Designers who need to create detailed motion prototypes
Product Screenshots
About Principle
Principle makes it easy to design animated and interactive user interfaces. Create motion designs that you can share with your team as videos or interactive prototypes.
Key Features
Timeline-based animation
Auto-animate between artboards
Interactive prototypes
Component reuse
Export to video
Sketch/Figma import
Things to Consider
Mac only
Animation-focused (not full design)
No collaboration features
Alternatives to Principle
Webflow
FreemiumBuild professional websites without code.
Best for: Startups who want full design control over their marketing site without hiring developers
Framer
FreemiumDesign and publish stunning websites in minutes.
Best for: Startups who want a beautiful marketing site up quickly with minimal learning curve
Figma
FreemiumThe collaborative design tool for building products.
Best for: Product teams who need collaborative design with real-time editing and easy developer handoff
Canva
FreemiumDesign anything. Publish anywhere.
Best for: Startups without dedicated designers who need to create marketing visuals quickly
Founder Reviews
3.8/5Editorial Review
Good design option with paid pricing. Solid choice for startups.
Reviewed December 2025 by our editorial team
Share your experience with Principle to help other founders