Principle

Principle provides a macOS‑based environment for creating animated and interactive user interfaces. Its timeline lets designers craft precise motion effects such as bounces, eases, and pops, while a flexible interaction system allows custom gestures and transitions without reliance on predefined presets. The tool supports multi‑screen workflows, offering an overview of screen flow and easy navigation between artboards.

The application integrates with existing design assets, importing files from Figma or Sketch and merging updates intelligently, which helps teams iterate on mobile, web, and desktop prototypes. Device presets and custom artboard sizes accommodate various platforms, and features like hover events and mouse‑wheel scrolling enable realistic web and desktop interactions. Designs can be shared instantly via a web link, allowing stakeholders on Windows, Linux, macOS, Android, or iOS to view and interact without additional software.

Principle also includes export options for video and animated GIF, facilitating presentation on social platforms. Built natively for Intel and Apple Silicon Macs, it leverages macOS capabilities such as full‑screen mode, Retina display support, and auto‑save for a smooth user experience.