AltCatalog

Alternatives to ProtoPie

High-fidelity interaction prototyping

Alt Score

Alt Score · 86

How this alternative ranks. How it works →

Verified coverage 90%85
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

#2 of 6 in UI design tools

ProtoPie ranks #2 of 6 in UI design tools, with an Alt Score of 86. It is proprietary, freemium from $25/mo and available on Windows, macOS, iOS, Android and Web. 10 of 10 checklist rows are verified against a public source.

Most compared with LunacyPenpotFigma
Official site Suggest an edit Data history Work on ProtoPie? Claim this page
Who it's for

Product designers and UX teams who need to prototype complex, dynamic interactions (not just screen-to-screen flows) for apps, devices, and connected hardware — used across industries like automotive, IoT, MedTech, and gaming.

What you get

A no-code tool for building high-fidelity prototypes with real logic: variables, conditions, and formulas drive interactions. It supports sensor input (motion, location, camera), voice, and hardware/IoT connections via ProtoPie Connect, and prototypes can be tested live across multiple devices at once (phone, tablet, wearable, vehicle screen).

How it works

Import designs from tools like Figma or Sketch, then add interactivity by wiring triggers (touch, sensor, voice, data) to responses (animation, navigation, variable changes) on a visual canvas — no code required. Finished prototypes are previewed on connected devices or shared via a link.

Why people leave ProtoPie

Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.

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Ranked alternatives

Ordered by Alt Score. Click any score to see the breakdown.

Sponsored Paid slot. Never affects the ranked order below. Promote here →
01

Free design tool with built-in assets.

WindowsmacOSLinux
Alt Score

Alt Score · 86

How this alternative ranks. How it works →

Verified coverage 90%85
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

02

Open source design with SVG-native files.

MPL-2.0 Web
Alt Score

Alt Score · 86

How this alternative ranks. How it works →

Verified coverage 90%85
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

03

The collaborative interface design default.

Proprietary WindowsmacOSiOSAndroid +2
Alt Score

Alt Score · 82

How this alternative ranks. How it works →

Verified coverage 90%80
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

04

The Mac-native design classic.

Proprietary macOSiOSWeb
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

05

Design that publishes as real sites.

Proprietary WindowsmacOSLinuxWeb
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%65
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

Feature comparison

Rows come from the UI design tools checklist (14 rows). Human-verified cells only. ? means the value has not been verified.

Comparing ProtoPie Lunacy × Penpot × Figma × Sketch × Framer ×
UI design tools checklist ProtoPieLunacyPenpotFigmaSketchFramer
Pricing model
Starts at
License
Platforms
Real-time collaboration
Components & variants
Prototyping & interactions
Dev handoff (inspect, tokens)
Plugins ecosystem
Offline editing
Self-hostable
Version history & branching
Free tier limits
Design systems support
verified pending unknown (?) Click any cell to view its source or propose a value
Sources & verification 15

Every fact and feature listed for ProtoPie is verified against its own pages. Each alternative is sourced on its own page.

FAQ

Yes. Lunacy, Penpot and Figma have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.

Penpot — every license claim links its source.