Principle

Principle

Interaction and animation design tool

Description

Design mockups are static; showing a team or boss how the UI moves and transitions is hard to explain in words. Principle fills the gap: a tool for designing animated and interactive interfaces on the Mac, fine-tuning each transition on a timeline, wiring screens into a clickable prototype, exporting video or previewing on a device. A macOS app.

Features



Motion design: Add smooth animated transitions to UI.

Interactive prototypes: Wire clickable interactive demos.

Timeline: Fine-tune each animation on a timeline.

Export and preview: Export video or preview on a device.