principle ☆
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Description:
Design animated and interactive user interfaces
Type: Cask  |  Latest Version: 6.43@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
Jun 30, 2026 2:15am 6.43 0 VERSION_BUMP 298cd88d
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
Mar 9, 2023 3:13am 6.29.6 0 VERSION_BUMP be03ec71
Feb 21, 2023 10:41am 6.29 0 VERSION_BUMP c9a8921d
Jan 15, 2023 1:12am 6.28,6033 0 VERSION_BUMP f019b1d3
Dec 4, 2022 4:54am 6.27,6032 0 VERSION_BUMP 3e49cfc7
Dec 3, 2022 12:24am 6.26,6031 0 VERSION_BUMP f3ea115f
Nov 23, 2022 6:10am 6.25,6030 0 VERSION_BUMP 9c171d7d
Nov 11, 2022 11:39pm 6.24,6029 0 VERSION_BUMP 2b93968c
Nov 7, 2022 6:26am 6.23,6028 0 VERSION_BUMP 13fa4b59
Nov 4, 2022 1:52am 6.22,6027 0 VERSION_BUMP 66386f12
Nov 3, 2022 12:06pm 6.20,6026 0 VERSION_BUMP f027a2f1
Jun 28, 2022 10:37pm 6.19,6023 0 VERSION_BUMP 73da83d3
Jun 27, 2022 1:34am 6.18,6022 0 VERSION_BUMP f644f920
Jun 10, 2022 5:16am 6.17,6021 0 VERSION_BUMP 3cd35d68
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