Design tool for Mac that lets you create animations and interactive user interfaces.
Principle is a designer tool that lets you build interactive designs, such as prototypes. It can include multi-screen flow, interactions and animations. As you use Principle to build your mockup and then turn it into an interactive design, your Principle prototype looks a lot more realistic (i.e. like a real website or app) than using tools that allow you to upload full screenshots that then get connected together.
Purchase for $129.
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