iOS Dev Tools

The greatest iOS development tools, including websites, desktop and mobile apps, and back-end services. Updated daily by Max Ott.


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A Mac app for creating animated and interactive user interface designs. Principle can be used to design everything from a short animation to a slick user interaction, or even an extensive multiple screen app. You can export your designs as a video or an animated gif ready for sharing or, using the Principle Mirror app, you can also interact with your design on your device or view designs that others have sent you. Principle isn’t just for iPhone apps either, you can choose a device preset (which includes Apple Watch) or enter a custom Artboard size.

screenshot of Principle

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