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Principle

Design tool for animated and interactive user interface prototypes.

$129

About Principle

Principle is a Mac-based design tool for creating animated and interactive user interface prototypes. It excels at transition design between screens, micro-interactions, and scroll-based animations. Used by designers at Apple, Google, and Facebook to prototype mobile and web interfaces with timeline-based animation controls and driver-based interactions.

Key Features

Screen transitions

Timeline animations

Drivers for scroll interactions

Component reuse

Sketch import

Video recording

App Details

Category: Design & Creative Tools
Pricing: One-time
Starting At: $129
Platforms: Mac

Available On

Mac

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