Name: Principle - Easily create animated and interactive user interface designs.
Mac Platform: Intel
OS Version: OS X 10.9 or later
Processor type(s) & speed: 64-bit processor
Web Site: http://principleformac.com/
Principle makes it easy to create animated and interactive user interface designs. Whether you're designing the flow of a multi-screen app, or new interactions and animations, Principle lets you create designs that look and feel amazing.
Release notes not available at the time of this post