Design

Principle

Beautiful interactive prototypes with fluid animations on Mac

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★4.5ratingPricing · Paid from $129/moDeclining
The FalcoScan Intel PanelPrinciple · Design
Data updated 2 November 2026
Opportunity
Low
Band
Saturation
Contested
Band
Wrapper risk
Low
Band
Momentum
Declining
Market trend
Rating
4.5
of 5 · FalcoScan rating

Design AI has a narrow moat on average, from the moat scores of its rated products. What protects Design AI tools, and the widest moats

The Brief

What Principle does

Principle is a Mac app for creating animated UI prototypes with fluid, physics-based animations. Timeline-based animation gives designers precise control over every transition. The tool for creating prototypes that feel exactly like the finished product.

How Principle compares with its closest alternatives

4 of the 5 closest alternatives have a free plan; Principle does not. Among the 5 that list a starting price, the cheapest is Adobe XD at $10 a month and the median is $12. Principle starts at $129 a month, above that median. 1 of the 5 offers an API; FalcoScan's records show none for Principle. Principle offers a desktop app. Of the alternatives, 4 offer a desktop app. Principle was founded in 2015; the alternatives were founded between 2010 and 2017, 3 of them earlier. The alternatives with a known headquarters are in Germany, the Netherlands and the United States.

Market position · Design

How Principle compares in Design

Principle has low opportunity and sits in the bottom third of 352 live Design tools on FalcoScan. Across Design, the average opportunity score is 52.4 and the average saturation score 41.5. FalcoScan rates Principle's own market position as contested. 54 of the 352 operating Design tools have hot momentum, and FalcoScan has recorded 23 shutdowns in the category.

Principle compared with its closest alternatives
ProductOpportunitySaturationPricingPricing fromFree planAPIPlatformsMomentum
PrincipleFounded 2015LowContestedPaid$129/moNoNoDesktopDeclining
Linearity MoveFounded 2017 · Berlin, GermanyLowContestedFreemium$11/moYesNoMobile, DesktopRising
SketchFounded 2010 · Amsterdam, NetherlandsLowCrowdedPaid$12/moNoNoDesktopStable
FigmaFounded 2012 · San Francisco, United StatesModerateContestedFreemium$15/moYesYesWeb, DesktopRising
Marvel AppFounded 2013LowContestedFreemium$12/moYesNoWeb, MobileStable
Adobe XDFounded 2016 · San Francisco, United StatesLowContestedFreemium$10/moYesNoWeb, DesktopDeclining

Exact opportunity and saturation scores for all 6 of these, and where each ranks in Design.

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What it ships with

Capabilities & who uses it

The capabilities Principle exposes to builders and the verticals it currently serves.

AI Capabilities
AnimationPrototyping
Industry Verticals
Design
Tagged

Principle shows up when builders search for these

animationprototypingMactimelinefluid-motion
Similar tools · Design

Alternatives to Principle

Products still running that do the same job, from the design market and related ones, closest match first.

See the Design market
Design
Linearity Move

AI-powered animation tool for designers on Mac and iPad

★ 4.3Opportunity Low
Freemium
Design
Sketch

The original Mac design tool, now with AI features

★ 4.5Opportunity Low
Paid
Design
Figma

The collaborative design platform every product team uses

★ 4.9Opportunity Moderate
Freemium
Design
Marvel App

Simple prototyping and user testing for design teams

★ 4.3Opportunity Low
Freemium
Design
Adobe XD

Adobe's UX/UI design and prototyping tool

★ 4.4Opportunity Low
Freemium
Design
Axure RP

The most powerful prototyping tool for complex enterprise UX

★ 4.4Opportunity Low
Paid
Featured in
Questions

Principle: common questions

Is Principle free?

No. Principle is a paid product from $129 a month.

What are the best alternatives to Principle?

The closest alternatives to Principle that are still running, matched on the AI capabilities, uses and audience they share, are Linearity Move, Sketch, Figma, Marvel App, and Adobe XD.

Is Principle still running?

Yes. As of 2 November 2026, FalcoScan lists Principle as operating at principleformac.com.

Does Principle have an API?

FalcoScan's records show no public API for Principle.

Who is Principle for?

Principle is built for designers.

How do I sign in to Principle?

Sign in on Principle's own website, principleformac.com. FalcoScan reviews Principle but does not run its accounts, so logins, passwords and billing are handled by Principle directly.

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