Principle 是一款交互设计工具，五分钟即可制作出一个具有完整交互动画的原型，并且可将交互动画生成视频或者 Gif 分享到 Dribbble、Twitter 等社交平台。此外 Principle 还支持多种尺寸的原型设计，包括 Apple Watch。
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.
There are a lot of things you might want to design: a short animation, a slick interaction, or an extensive multiple screen app. No matter what you’re doing, you can do it with Principle.
Principle’s timeline makes it quick work to illustrate the perfect bounce, ease, and pop.
Want to design a totally new interaction? Principle gives you the freedom to experiment without limiting you to pre-defined transitions.
Multiple Screens
It’s a breeze to design the flow of a multi-screen app; and when you’re done you’ll have a bird’s-eye view of all your screens.
With artboards, magic animations and a timeline, using Principle will give you Déjà vu.
Principle Mirror lets you interact with your design instantly on device or view designs that others have sent you.
Showing your designs has never been simpler with the record feature: Export a video or an animated gif that can be shared on Dribbble, Twitter, and wherever else you’d like!
Principle is powered by Core Animation, the hardware-accelerated animation engine that iOS and OS X are built on. It also includes the Mac features you love: Full-screen mode, a Retina interface, and Auto Save — so you’ll feel right at home.
Choose a device preset or enter a custom Artboard size. Whether it’s web, desktop, mobile, or watch — you’re set!
Compatibility: macOS 10.13 or later 64-bit