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![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle is an animation, interaction and prototyping tool for user interface designers.
www.principle.app
![Principle 6](https://ph-files.imgix.net/96fb40a9-165e-4427-a224-8df55348cb1e.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle 6
Animate ideas, design better apps
![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle for Mac 4.0 makes it easy to design animated and interactive user interfaces. Whether you're designing the flow of a multi-screen app, or new interactions and animations, Principle helps you create designs that look and feel amazing.
![Principle for Mac 4.0](https://ph-files.imgix.net/724744ad-a02c-4cb6-84d9-b566b52a236a.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle for Mac 4.0
Animate your ideas, design better apps
![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
![Principle for Mac 3.0](https://ph-files.imgix.net/de2e5f00-101e-42b8-a274-85d08e7b3324.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle for Mac 3.0
Send events between component and parent
![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
![Principle 2.0](https://ph-files.imgix.net/f2e8c376-89a5-4497-abf9-2240d462fc85.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle 2.0
Animate your ideas, design better apps, now with components
![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Daniel Hooper
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Thanks for the kind words everyone, can't wait to see what you make with it!
![Principle](https://ph-files.imgix.net/9cee9318-d3d4-4800-a3b8-35e728ba1aaa.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle
Animate your ideas, design better apps
![Daniel Hooper](https://ph-avatars.imgix.net/231315/original.jpeg?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle is the simplest way to animate your app prototypes. Whether you're designing the flow of a multi-screen app, or new interactions and animations, Principle lets build designs for every platform and immediately demo them for your team.
![Principle](https://ph-files.imgix.net/9cee9318-d3d4-4800-a3b8-35e728ba1aaa.png?auto=compress&codec=mozjpeg&cs=strip&auto=format&w=48&h=48&fit=crop&frame=1)
Principle
Animate your ideas, design better apps