Protopie

ProtoPie is an advanced interaction design and prototyping tool that enables designers to create highly realistic, interactive prototypes without writing code. It focuses on complex interaction logic, dynamic content, and multi-device experiences, making it suitable for mobile apps, web platforms, wearables, and embedded interfaces.

Using a trigger–response model, ProtoPie lets users define interactions based on gestures, conditions, variables, and sensor inputs such as tilt, sound, and proximity. Designers can build multi-scene flows, componentize reusable UI elements, and manage sophisticated states and animations. The tool supports data-driven prototyping through variables, formulas, and external data connections, allowing teams to simulate real user scenarios and application logic.