vioscale
Comparison

Principle vs ProtoPie

On the evidence we track, ProtoPie leads this comparison with a composite score of 61/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Principle full profile →ProtoPie full profile →
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Principle46
★ProtoPie61
Score
Vioscale score
Principle46 / 100low · 37%
ProtoPie61 / 100medium · 55%
Pricing
Free tier
Principle✗
ProtoPie✓
Model
Principlecommercial
ProtoPiefreemium
Price level
Principlehigh
ProtoPiemid
Starting price
Principle$129
ProtoPie$25
Transparent
Principle✓
ProtoPie✓
Integrations
Count
Principle2
ProtoPie18
Security
Certifications
Principle–
ProtoPieISO 27001:2013, ISO 27701:2019
Gdpr
Principle–
ProtoPie✓
Iso27001
Principle–
ProtoPie✓
Trust center
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for mockup tools. “-” means undocumented, not absent.

Capabilities
Architecture model
PrincipleLocal mac native app
ProtoPieManaged cloud saas browser
Css flexbox based auto layout engine
Principle-
ProtoPie✓
Stateful interactive prototyping with variables and logic
Principle✓
ProtoPie✓
Component variants and property overrides
Principle-
ProtoPie✓
Design token variable mapping colors spacing typography
Principle-
ProtoPie-
Real time multiplayer crdt cursor sync
Principle-
ProtoPie-
Developer mode handoff environment css swift export
Principle-
ProtoPie-
Advanced micro interaction animation smart animate
Principle✓
ProtoPie✓
Third party plugin ecosystem API
Principle-
ProtoPie✓
Offline editing mode with conflict resolution
Principle-
ProtoPie-
SOC2 type ii
Principle-
ProtoPie-
Gpl or permissive oss license
Principle-
ProtoPie-
Pricing model
PrincipleFlat lifetime license
ProtoPiePer editor seat monthly

What each one is

The product in its own terms, so the numbers below have context.

Principle

A native macOS application for designing animated and interactive user interfaces across web, mobile, and desktop platforms, featuring keyframe-based animation controls and automatic transitions between artboards.

Independently observed

ProtoPie

Leader

A design tool that enables teams to create high-fidelity interactive prototypes with AI-assisted interactions, test them with real users, and share precise interaction specifications with developers. It supports multi-device and hardware testing with cloud-based collaboration.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Principle

from $129Perpetual licence

$129 per computer. Renewal available for $99 to access new features released after initial purchase.

  • Principle License$129 per computer, perpetual license
    • Timeline animation with keyframes and easing customization
    • Multi-artboard screen flow design
    • Automatic animations between named layers on different artboards
    • Hover and mouse wheel event support
    • Import from Figma and Sketch with intelligent merging
    • +3 more
as of verify ↗

ProtoPie

Leader
from $25/moSubscriptionFree tier

Free tier available. Paid plans from $25/mo (Basic) to $47/editor/mo (Pro). Annual billing saves up to 26%. Enterprise available by quote.

  • FreeFree
    • 2 prototypes
    • 8 scenes per prototype
    • 50MB Cloud storage
    • Personal libraries
  • Basic$25/mo (1 seat)
    • Shareable links
    • AI Credits
    • No watermark
    • 20 prototypes
    • 10 scenes per prototype
    • +2 more
  • Pro$47/editor/mo (min. 3 seats)
    • All Basic features
    • Unlimited prototypes
    • Unlimited handoff recordings
    • 5GB cloud storage per team
    • Local prototype saving
    • +2 more
  • EnterpriseContact sales
    • All Pro features
    • Custom hardware integrations
    • Private server & admin rights
    • Custom fonts
    • ISO-compliant security & SSO
    • +1 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Principle✗
ProtoPie✓
iOS
Principle✗
ProtoPie✓
Android
Principle✗
ProtoPie✓
macOS
Principle✓
ProtoPie✓
Windows
Principle✗
ProtoPie✓
Deployment
Cloud / SaaS
Principle–
ProtoPie✓
Self-hosted
Principle–
ProtoPie✓
On-premise
Principle–
ProtoPie✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (2)
  • Figma
  • Sketch

Principle

2 total - 0 not shared
  • Figma
  • Sketch
Independently observed

ProtoPie

Leader
17 total - 15 not shared
  • Adobe XD
  • Arduino
  • Unity
  • IFTTT
  • Gamepad
  • Logitech G29
  • API Plugin
  • Spline
  • Rive
  • Bezi
  • Google Maps
  • Unsplash
  • Pexels
  • Pixabay
  • Google Fonts
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.