Justinmind vs Principle
On the evidence we track, Justinmind leads this comparison with a composite score of 64/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for mockup tools. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Justinmind
LeaderJustinmind enables designers to create interactive prototypes ranging from low-fidelity wireframes to high-fidelity simulations, complete with animations, interactions, and user flows. Teams can collaborate in real-time, test designs with users, and generate specifications documents before development begins.
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.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Justinmind
LeaderFrom free tier to $29/editor/month. Optional perpetual licenses also available (20% of list price annually for updates after year 1).
- FreeFree
- UI design and wireframing
- Interactive input forms
- Vector design
- Pen tool
- Export to PNG, JPG, SVG
- +2 more
- Standard$19/editor/month
- Advanced interaction design
- Forms design
- Advanced collaboration
- Teams management
- Unified admin and billing
- +5 more
- Professional$29/editor/month
- Masters
- Smart templates
- Data simulation
- User flows
- Export to HTML
- +2 more
- EnterpriseContact sales
- SAML Single Sign-On
- Shared fonts
- Export to documents
- Requirements management
- JIRA & Azure DevOps integration
- +2 more
Principle
$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
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- Sketch
- Figma
Justinmind
Leader- Adobe XD
- Adobe Photoshop
- Adobe Illustrator
- JIRA
- Confluence
- Azure DevOps
- Usertesting
- Validately
- PhoneGap
Principle
- Figma
- Sketch
Justinmind or Principle: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.