What is Principle?
Principle is an open-source visual tool for building interactive user interfaces. It allows designers and developers to design, prototype, animate and develop UIs without writing any code.
Some key features of Principle:
- Easy to use drag and drop interface to add and animate layers
- Supports gestures like tap, drag, pinch, etc. to trigger interactions
- Has a timeline view to visualize transitions and micro-interactions
- Allows exporting production ready code components for iOS, macOS and Android
- Focuses specifically on animations and interactions, unlike other broader prototyping tools
- Integrates with Sketch and Figma to convert designs into interactive prototypes
- Complements code-based tools for developers to bridge design mockups with actual apps
With its simplicity and focus on micro-interactions, Principle can help teams prototype and build highly interactive user interfaces faster. The exporter makes it easy to take those prototypes into production apps.