Test the full journey, not isolated screens
Most prototyping tools stop at a single device. ProtoPie connects every screen, from cockpit to cabin, phone to TV, and tests how they behave together.
Link a phone tap to a TV transition and test how screens hand off to each other
Prototype the full journey from mobile to desktop to wearable in one file
Validate what users actually experience across every surface
Test what users actually experience, from first tap to final screen.
Test the full journey, not isolated screens
Most prototyping tools stop at a single device. ProtoPie connects every screen, from cockpit to cabin, phone to TV, and tests how they behave together.
Link a phone tap to a TV transition and test how screens hand off to each other
Prototype the full journey from mobile to desktop to wearable in one file
Validate what users actually experience across every surface
Test what users actually experience, from first tap to final screen.
Test the full journey, not isolated screens
Most prototyping tools stop at a single device. ProtoPie connects every screen, from cockpit to cabin, phone to TV, and tests how they behave together.
Link a phone tap to a TV transition and test how screens hand off to each other
Prototype the full journey from mobile to desktop to wearable in one file
Validate what users actually experience across every surface
Test what users actually experience, from first tap to final screen.
Test the full journey, not isolated screens
Most prototyping tools stop at a single device. ProtoPie connects every screen, from cockpit to cabin, phone to TV, and tests how they behave together.
Link a phone tap to a TV transition and test how screens hand off to each other
Prototype the full journey from mobile to desktop to wearable in one file
Validate what users actually experience across every surface
Test what users actually experience, from first tap to final screen.
Test the full journey, not isolated screens
Most prototyping tools stop at a single device. ProtoPie connects every screen, from cockpit to cabin, phone to TV, and tests how they behave together.
Link a phone tap to a TV transition and test how screens hand off to each other
Prototype the full journey from mobile to desktop to wearable in one file
Validate what users actually experience across every surface
Test what users actually experience, from first tap to final screen.
Change one value. Every screen responds.
Variables carry state across every screen. A login on mobile appears instantly on tablet and TV, without rebuilding logic for each device.
A variable set on one device updates every connected screen in real time
Sync actions so a trigger on one device fires a response on another
Test edge cases and state changes across the full device ecosystem at once
One source of truth, reflected everywhere simultaneously.
Change one value. Every screen responds.
Variables carry state across every screen. A login on mobile appears instantly on tablet and TV, without rebuilding logic for each device.
A variable set on one device updates every connected screen in real time
Sync actions so a trigger on one device fires a response on another
Test edge cases and state changes across the full device ecosystem at once
One source of truth, reflected everywhere simultaneously.
Change one value. Every screen responds.
Variables carry state across every screen. A login on mobile appears instantly on tablet and TV, without rebuilding logic for each device.
A variable set on one device updates every connected screen in real time
Sync actions so a trigger on one device fires a response on another
Test edge cases and state changes across the full device ecosystem at once
One source of truth, reflected everywhere simultaneously.
Change one value. Every screen responds.
Variables carry state across every screen. A login on mobile appears instantly on tablet and TV, without rebuilding logic for each device.
A variable set on one device updates every connected screen in real time
Sync actions so a trigger on one device fires a response on another
Test edge cases and state changes across the full device ecosystem at once
One source of truth, reflected everywhere simultaneously.
Change one value. Every screen responds.
Variables carry state across every screen. A login on mobile appears instantly on tablet and TV, without rebuilding logic for each device.
A variable set on one device updates every connected screen in real time
Sync actions so a trigger on one device fires a response on another
Test edge cases and state changes across the full device ecosystem at once
One source of truth, reflected everywhere simultaneously.
Run a full demo or stakeholder walkthrough without engineering
ProtoPie Connect orchestrates every device in the session from one screen. Your whole team sees the same experience, live, without a build.
Control every connected device in the session from one central screen
Run live walkthroughs in person or share prototypes remotely for async review
Every stakeholder experiences the prototype on the right device
Every stakeholder sees the same experience, on the right device.
Run a full demo or stakeholder walkthrough without engineering
ProtoPie Connect orchestrates every device in the session from one screen. Your whole team sees the same experience, live, without a build.
Control every connected device in the session from one central screen
Run live walkthroughs in person or share prototypes remotely for async review
Every stakeholder experiences the prototype on the right device
Every stakeholder sees the same experience, on the right device.
Run a full demo or stakeholder walkthrough without engineering
ProtoPie Connect orchestrates every device in the session from one screen. Your whole team sees the same experience, live, without a build.
Control every connected device in the session from one central screen
Run live walkthroughs in person or share prototypes remotely for async review
Every stakeholder experiences the prototype on the right device
Every stakeholder sees the same experience, on the right device.
Run a full demo or stakeholder walkthrough without engineering
ProtoPie Connect orchestrates every device in the session from one screen. Your whole team sees the same experience, live, without a build.
Control every connected device in the session from one central screen
Run live walkthroughs in person or share prototypes remotely for async review
Every stakeholder experiences the prototype on the right device
Every stakeholder sees the same experience, on the right device.
Run a full demo or stakeholder walkthrough without engineering
ProtoPie Connect orchestrates every device in the session from one screen. Your whole team sees the same experience, live, without a build.
Control every connected device in the session from one central screen
Run live walkthroughs in person or share prototypes remotely for async review
Every stakeholder experiences the prototype on the right device
Every stakeholder sees the same experience, on the right device.
Proven results for product teams
reduction in engineering rework
reduction in engineering rework
50%
less engineering rework
faster design-to-development cycles
75%
faster design-to-development cycles
0
developer hours spent validating interactions
Built for designers. Trusted by teams.
Designers & individual contributors
Connect devices and test cross-device flows in the same session
Iterate independently without waiting for an engineering testbed
Share with a link. Stakeholders test on their own device
Designers & individual contributors
Connect devices and test cross-device flows in the same session
Iterate independently without waiting for an engineering testbed
Share with a link. Stakeholders test on their own device
Teams & enterprises
One prototype every stakeholder reviews, tests, and signs off on
Auto-generate interaction specs from the connected prototype
Reuse multi-device logic across product lines and teams
Teams & enterprises
One prototype every stakeholder reviews, tests, and signs off on
Auto-generate interaction specs from the connected prototype
Reuse multi-device logic across product lines and teams
Works everywhere your product does
No engineering setup required to run a full multi-device session
No engineering setup required to run a full multi-device session
Real-time sync with no latency between connected devices
Real-time sync with no latency between connected devices
Works across iOS, Android, macOS, Windows, and web
Works across iOS, Android, macOS, Windows, and web
See multi-device prototyping in action
Book a 30-minute demo and we'll walk you through a live prototype running across multiple devices.
See multi-device prototyping in action
Book a 30-minute demo and we'll walk you through a live prototype running across multiple devices.