Principle Overview
Principle is a design tool for macOS that makes it easy to create animated and interactive user-interface designs, from Principle, Inc. It is built for designers who want to show how an interface moves and responds, not just how it looks. You design screens on a canvas or import them from other design tools, then use a timeline and an intuitive linking system to define animations and transitions between states, producing smooth, realistic motion with relatively little effort. Principle is well suited to crafting micro-interactions, animated transitions, and short interactive flows that can be played back, recorded as videos to share, or previewed on a device through a companion app. Its straightforward approach to timing and easing makes motion design approachable, which has made it popular for communicating interaction ideas to teams and stakeholders. It is a paid product offered with a free trial. This page links to the official Principle download.
