Principle
Mac-only prototyping app for animated and interactive UI design. Created by a former Apple engineer; known for timeline-based animations and ease of use for designers.
Our Verdict
Charming timeline prototyper, but effectively frozen in time — most teams should pick ProtoPie or Framer instead.
Pros
- Timeline-based animation feels intuitive to designers
- Solid for crafted animated iOS interaction demos
- Lightweight compared to patch-based alternatives
- Small learning curve for Figma/Sketch users
Cons
- Mac-only and development has slowed significantly
- Team collaboration features basically absent
- Loses ground to ProtoPie and Framer every year
- Limited ecosystem of resources and components
When to Use Principle
Good fit if you need
- Timeline-based iOS transition animation prototyped on Mac
- Micro-interaction designed and shared as video with engineers
- Page scroll animation sequence validated before implementation
- Tab bar switching behavior prototyped with natural easing
- Motion spec produced from Principle file for developer reference
Pricing
Price wrong?Principle Pricing
- Pricing Model
- subscription
- Free Tier
- No
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Lock-in Assessment
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