principle ☆
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Description:
Design animated and interactive user interfaces
Type: Cask  |  Latest Version: 6.42@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Productivity
Tags: design prototyping ui ux macos animation
Install: brew install --cask principle
About:
Principle is a macOS application for creating animated and interactive UI prototypes without writing code. It allows designers to quickly mockup app flows, micro-interactions, and transitions with a timeline-based interface. The tool bridges the gap between static design and functional code, enabling realistic user experience testing.
Key Features:
  • Timeline-based animation editor for precise control
  • Support for multi-screen interactions and user flows
  • Reusable components and instant preview on devices
  • Integration with Sketch and Figma for importing designs
Use Cases:
  • Prototyping mobile app transitions and micro-interactions
  • Creating animated user onboarding flows
  • Demonstrating UI behavior to stakeholders and developers
Alternatives:
  • Framer – More code-focused and powerful for complex logic, but with a steeper learning curve
  • ProtoPie – Cross-platform alternative with advanced sensor and condition-based interactions
  • Principle – Mac-only, optimized for rapid iOS/Apple ecosystem prototyping
Version History
Detected Version Rev Change Commit
Sep 15, 2025 12:47pm 6.39 0 VERSION_BUMP 5e4af27a
Aug 5, 2025 2:22pm 6.39 0 VERSION_BUMP 8694d752
Sep 26, 2023 8:56pm 6.33 0 VERSION_BUMP 475a4a9b
Sep 15, 2023 5:45pm 6.32 0 VERSION_BUMP d7f9702d
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