Principle

Name: Principle
Brand: Principle
Rating: 4.3 (15 reviews)

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Design tool for creating animated and interactive UI prototypes on Mac

Paid plans only, free trial

Paid UI/UX Design Prototyping Animation

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4.3 (15 across the web)

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Reviews on G2

15 reviews tracked

The Bottom Line

Updated Oct 26, 2026

Price: Paid plans only, free trial. Compare plans

Key facts

Principle is a Mac app for designing animated and interactive user interfaces
It creates prototypes with timeline-based animations and interactions
Offers paid plans or a one-time purchase

Pros

Great for animations
Easy timeline editor
Native Mac performance

Cons

Mac only
No collaboration

What is Principle?

Principle is a native macOS application that enables designers to create animated and interactive user interfaces. The tool features a timeline-based animation system for creating polished motion effects, multi-screen workflow design, and custom interaction prototyping without pre-defined limitations. Principle imports directly from Figma and Sketch with intelligent merging for design updates. It supports device presets for mobile, web, and desktop, including hover events and mouse wheel scrolling. Export options include one-click web sharing (viewable on any device), video, and animated GIFs. Used by design teams at leading tech companies. Available for Intel and Apple Silicon Macs with full-screen mode, Retina support, and auto-save.

Available on: macOS

Data compiled by Toolradar Pricing checked Oct 26, 2026 · How we evaluate

Source principleformac.com

Ratings Across the Web

4.3 (15 reviews)

Principle holds an aggregate rating of 4.3 out of 5 from 15 reviews across G2, last checked September 5, 2026.

G2 15 reviews

4.3/5

Ratings aggregated from independent review platforms. Learn more

Key Features

UI animation
Prototyping
Transitions
Timeline
macOS native
Sketch import

Pricing Plans

14-day Free Trial

Pricing checked Oct 26, 2026. Source: principleformac.com, read Oct 26, 2026

Principle plans and prices, checked October 2026
Plan	Price	Details
License	$129/one-time	Per computer license 1 year of updates macOS native +1 more Show less Figma/Sketch integration

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Is Principle worth the price?

Good value

Principle's one-time license fee of $129 for a perpetual license with one year of updates is fair, especially for a macOS native tool with Figma/Sketch integration.

This model offers good long-term value compared to subscription-based competitors, making it a solid investment for individual designers. It's best for designers who prefer a single purchase over recurring payments.

Full Principle pricing: every plan, hidden costs and alternatives

Principle by the numbers

Principle compared with 65 Prototyping tools on Toolradar, as of Nov 2026
Metric	Principle	Peer median	Position (1 is best)
Free plan	No	72% have one	n/a
Listed as an alternative to	4 tools	1	#17 of 65 (joint)
Integrations listed	1	3	#10 of 12 (joint) tools with at least one integration recorded
Compare-page visits, last 30 days	29 visits	32	#14 of 26 tools with 20+ compare-page visits

Listed as an alternative to: #17 on 2026-10-16 to #17 on 2026-11-02 (rank among 65 tools, 1 is best).

Each position is counted among the tools that have data for that row, as noted under it. All Prototyping data · How we compute this. Advertising and placement fees are not inputs to any position. Visit counts include visits from every source.

Cite this: Toolradar, “Principle by the numbers”, Nov 2026.

Reviews

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4.3/5

Across 15 verified user reviews on G2

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Best Principle Alternatives

Top alternatives based on features, pricing, and user needs.

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ProtoPie Freemium

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Origami Studio Free

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Principle vs Adobe XD Head-to-head: features, pricing, who wins Principle vs Axure RP Head-to-head: features, pricing, who wins Principle vs Framer Head-to-head: features, pricing, who wins

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Principle FAQ

How does Principle facilitate the creation of interactive user interfaces?

Principle allows designers to create interactive UI prototypes using a timeline-based animation system for motion effects and custom interaction prototyping. It supports multi-screen workflow design and includes device presets for mobile, web, and desktop interfaces.

Which teams would benefit most from using Principle?

Principle is ideal for design teams focused on UI/UX design and animation, particularly those needing to create polished motion effects and interactive prototypes. It is used by design teams at major technology companies like Apple, Google, and Netflix.

How does Principle compare to Framer for UI prototyping?

Principle offers a native macOS application with a timeline-based animation system and direct import from Figma and Sketch, focusing on interactive UI prototypes. Framer also provides prototyping capabilities, but Principle emphasizes its easy timeline editor and native Mac performance.

What are the main limitations of using Principle for design projects?

Principle is exclusively available for Mac operating systems and does not include built-in collaboration features. This means it is best suited for individual designers or teams using other tools for collaborative aspects of their workflow.

Does Principle include a free tier for users?

Principle is offered as a paid product and does not include a permanently free tier for its users. It provides a comprehensive set of features for creating animated and interactive UI prototypes.

Can Principle integrate with existing design tools like Figma or Sketch?

Yes, Principle can import directly from Figma and Sketch, offering intelligent merging capabilities for design updates. This allows designers to bring their existing work into Principle for animation and interaction prototyping.

How does Principle support different device types for prototypes?

Principle supports various device types through presets for mobile, web, and desktop. It also includes features like hover events and mouse wheel scrolling to accurately simulate interactions across these different platforms.

Source: principleformac.com

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