ProtoPie is an advanced, code-free interactive prototyping tool for mobile, desktop, web, IoT and custom hardware, a trigger-response model supporting taps, swipes, sensor inputs (gyroscope, compass), conditional logic and variables, with real-device testing.
Free: 2 prototypes, 2 interaction recordings. Pro: $67/month (1 editor): unlimited prototypes, API access, team libraries. Enterprise: custom (private server, custom hardware integrations, user testing, priority support).
Designers prototyping genuinely complex, sensor-driven or hardware-connected interactions (IoT devices, custom hardware) that exceed what most design tools' native prototyping can handle.
This is the strongest choice specifically for IoT/hardware prototyping (sensor inputs, custom hardware integrations on Enterprise): overkill for simple click-through prototypes better served by a lighter tool.
Build interactive prototypes for real digital products, no code required.
