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Open Model Lab

Pricing sections

Compare free and Supporter

Pricing

Core learning stays free. Supporter helps keep the project running.

Use concept pages, simulations, tools, guided paths, challenges, and basic practice without paying. Become a Supporter when you want convenience features and want to fund continued development.

See Supporter plan

Free core learning

Learn, explore, and practice without a subscription.

The core learning experience is not paywalled. Start signed out with local progress, or sign in later if you want account sync.

Concept pages across the public catalog
Interactive simulations and live learning benches
Guided paths, starter tracks, topics, and subject discovery
Challenges plus basic practice and tests
Learning tools such as Circuit Builder and Chemistry Reaction Mind Map
Local-first progress that works before sign-in
Optional sign-in with progress sync for free accounts

Supporter plan

Fund development and unlock convenience features.

Ad-free browsing on eligible routes
Saved exact-state setups
Saved compare setups
Exact-state sharing links
Richer review, analytics, and study tools
Account-backed saved study tools where supported
Roadmap space for future cloud, export, or API-costly features when they ship

The same core learning flow stays free. Supporter adds account-backed conveniences and helps pay for hosting, maintenance, and continued development.

Access model

You can browse signed out for free. Local-first progress works right away.
Signing in is optional. Free accounts can sync core progress across devices.
Supporter adds convenience features without creating a separate learning product.

Ads model

Free browsing may show ads on selected eligible discovery and public routes only. Protected live learning benches and core interactive flows stay clear.

How ads work

Supporter billing

Sign in first so Stripe can attach Supporter to the correct Open Model Lab account.

Sign in firstBrowse concept pages

Need the public billing policy before opening Stripe? Review Billing / cancellation / refunds

Stripe handles Supporter checkout, subscription management, and billing. Use the billing page for cancellation, refunds, and plan details.

Billing / cancellation / refunds