UX Invariants

Simple, One-Time Pricing

Pay once. Use indefinitely. No subscriptions. No usage tracking.

Save review time, prevent UX regressions, align multiple contributors, and reduce rework from AI-generated code.

Individual

$49 One-time

For solo builders and independent work.

Includes

  • Full UX invariant set
  • Unlimited personal projects
  • Unlimited client work
  • Framework- and tool-agnostic
  • Delivered as Markdown

Best for

  • Indie hackers
  • Freelancers
  • Solo founders
  • Senior engineers working independently
Purchase

Team

$249 One-time

For teams sharing invariants across products, repos, or agents.

Includes

  • Everything in Individual
  • Internal team sharing permitted
  • Use across multiple projects and codebases
  • Suitable for shared internal standards

Best for

  • Startups
  • Small teams
  • Agencies
  • Growing products
Purchase

Company

$499 One-time

For companies where AI-assisted development is institutionalized.

Includes

  • Everything in Team
  • Explicit rights for broad internal distribution
  • Designed for many contributors and long-lived products

Best for

  • Established companies
  • Multiple teams using LLMs
  • Large internal codebases and agents
Purchase

Product

$1,499 Per product

For shipping UX Invariants embedded inside an end-user product.

Includes

  • Everything in Company
  • Embed the UX Invariants or derivatives inside an end-user product
  • Distribute to third parties as long as the Material is not exposed or extractable
  • Modify and adapt for product integration

Best for

  • Commercial software shipping with the UX Invariants embedded
  • Platforms exposing invariant-driven UX constraints to customers
  • Products bundling UX guardrails into customer-facing tooling
Purchase Product License

Pricing & Trust

This product is sold on an honor system.

  • no license enforcement
  • no DRM
  • no usage tracking

Choose the tier that reflects the value it provides to your organization, not how hard it would be to bypass.

Why One-Time Pricing?

These invariants are not a service.

They are codified experience.

They don’t expire. They don’t require ongoing support. Their value compounds as your product and team grow.

Pay once. Reuse everywhere.

Still Unsure Which Tier to Choose?

A simple rule of thumb:

  • Only you will use it → Individual
  • It will be shared internally → Team
  • Many contributors or teams → Company
  • Embedding in an end-user product → Product

If you’re on the fence, choose the higher tier.

Built for Durability

  • No subscriptions
  • No lock-in
  • No tracking
  • Built for engineers who value durable constraints over clever prompts