About this tool
Principle is the fast Mac app for timeline animation and driver-based motion. Import from Figma or Sketch, animate states, and share to the web.
It does not do sensor logic or Windows. ProtoPie has moved further for complex mobile behaviour; Principle still wins a one-sitting micro-interaction.
Details
| Attribute | Value |
|---|---|
| Category | Motion |
| Prototype kinds | Motion, Click-through |
| Website | principle.app |
| Pricing | About $129 one-time; 14-day trial |
| Added | 2026-08-17 |
| Last updated | 2026-08-17 |
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