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Software · head to head

Principle vs Stripe

P

Principle

Software

Animate your ideas, design better apps

From
$129/one-time
Rated
-
Full reviewWebsite
S

Stripe

Software

Financial infrastructure for the internet

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stripe has a free tier, so it costs nothing to try first.
  • Each has a real cost: Principle macOS only with no Windows or Linux editor available; Stripe requires developer setup and API integration for most use cases
  • They diverge on capability: Principle covers Timeline-based animation, Stripe covers Payment processing.

Where they differ

Only the attributes on which Principle and Stripe actually diverge.

Attributes where Principle and Stripe differ
AttributePrincipleStripe
Starting price$129/one-timeFree
Free tierNoYes
PlatformsmacOSWeb, iOS, Android
Founded20152010

Identical on both: pricing model (Unknown), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Principle

  • Timeline-based animation
  • Interactive prototypes
  • Touch gestures
  • Component reuse
  • Video export
  • Sketch import
  • Figma import
  • Driver animations

Only in Stripe

  • Payment processing
  • Subscription billing
  • Invoicing
  • Terminal (in-person payments)
  • Fraud prevention
  • 3D Secure
  • Global payouts
  • Financial reporting

What people use each for

The jobs each tool is most often brought in to do.

Principle

  • Mobile app prototypesnot Stripe
  • Micro-interactionsnot Stripe
  • Animation designnot Stripe
  • User flow designnot Stripe
  • Gesture-based interfacesnot Stripe

Stripe

  • Online paymentsnot Principle
  • Subscription managementnot Principle
  • Marketplace paymentsnot Principle
  • Global expansionnot Principle
  • Platform monetizationnot Principle

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Principle

  • macOS only with no Windows or Linux editor available
  • No vector morphing capability for complex shape transformations
  • Limited asset creation tools; cannot create vectors or shapes directly within Principle
  • Sketch import flattens certain properties including paths, fills, borders, masks, blur effects, and text layers
  • Limited variable support, logical loops, and data input capabilities compared to tools like ProtoPie or Origami

Stripe

  • Requires developer setup and API integration for most use cases
  • Dispute fee of $15 per chargeback is standard industry cost
  • Limited offline payment capabilities

Pricing, plan by plan

Principle

$129/one-time
  • License$129/one-time
    • One year of upgrades
    • Full access to all features
  • Upgrade License$99/year
    • Annual renewal for ongoing upgrades

Stripe

Free

No published plan breakdown. See the Stripe review.

Which should you pick?

Choose Principle if

  • You need timeline-based animation.
  • You work on macOS.
  • You also want interactive prototypes.
Principle review

Choose Stripe if

  • You need payment processing.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want subscription billing.
Stripe review

Questions people ask

Is Principle or Stripe better?
Neither clearly leads. Principle starts at $129/one-time and Stripe at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Principle or Stripe?
Stripe has a free tier; the other does not. Paid plans start at $129/one-time for Principle and Free for Stripe.
Does Principle or Stripe run on more platforms?
Principle runs on macOS. Stripe runs on Web, iOS, Android.
Can I use Stripe for free?
Yes. Stripe has a free tier, so you can try it without paying. Principle starts at $129/one-time.
What is Principle best used for?
Principle is most often used for mobile app prototypes, micro-interactions, animation design, user flow design. Of those, mobile app prototypes and micro-interactions are not what Stripe is typically brought in for.
What can Principle do that Stripe cannot?
Principle covers Timeline-based animation, Interactive prototypes, Touch gestures, Component reuse. Stripe covers Payment processing, Subscription billing, Invoicing, Terminal (in-person payments).

Answered from the vendors’ own pages

Principle: Does Principle run on Windows or Linux?

No. Principle is macOS only and runs on Intel and Apple Silicon Macs. There is no Windows or Linux editor available; however, prototypes can be shared and viewed on any platform via web link.

Source
Stripe: What are Stripe's transaction fees?

Standard US rates are 2.9% plus 30 cents for online card payments, 2.7% plus 5 cents for in-person, 3.4% plus 30 cents for keyed/phone transactions, and 0.8% capped at $5 for ACH payments.

Source
Principle: What is the cost of Principle?

Principle costs $129 for a one-time purchase with 1 year of upgrades included. After 1 year, upgrade licenses cost $99/year. A 14-day free trial is available with all features included.

Source
Stripe: How many currencies and countries does it support?

Stripe accepts 135+ currencies and supports payment acceptance in 40+ countries through Stripe Connect, enabling sellers to onboard and receive payouts in minutes.

Source
Principle: Can I import designs from Figma or Sketch into Principle?

Yes. Principle supports importing designs from Figma and Sketch with intelligent merging of re-imported files. Some Sketch properties such as paths, fills, borders, blur effects, masks, and text layers are flattened upon import.

Source
Stripe: What payment methods are supported?

Stripe supports dozens of payment methods including credit/debit cards, ACH transfers, and local payment options, with additional support through partnerships with Meta and Google.

Source
Principle: How do I share Principle prototypes with others?

Prototypes can be shared via web link with one click (File > Export > Share to Web). Recipients can view and interact with prototypes in any browser on any platform: Windows, macOS, Linux, Android, or iOS. No installation required.

Source
Stripe: Are there monthly fees or contracts?

No. Stripe charges no monthly fees or contracts, only per-transaction fees and dispute fees, making costs fully transparent and variable.

Source
Principle: Can I create vector shapes and morphing animations in Principle?

Principle does not support vector morphing, where vector objects transform into other vector shapes. It also has limited asset creation capabilities and editing is restricted to basic operations like scale and rotate.

Source
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