A tier is not just a quota. It decides which pipeline runs — how many of the eight checks execute, whether plain-language translation is available, and how much of the scorecard you see. The limit is enforced in the backend, so a request that slips past the interface still produces a result shaped for its tier.
Free
Built to demonstrate the mechanism cheaply, not to be anyone’s final word.
- Six of the eight checks: leak audit, twin control, null information, pre-registration (default floors only), temporal halves, cost realism — the ones whose absence would falsify the trust mechanism.
- A limited number of runs per month.
- The DSL, the full indicator library, and every asset class.
- The standalone Null-info diagnostic, immutable run history, and deflated-Sharpe accounting.
- The raw scorecard, with the two checks it does not run named on it. No plain-language attribution.
Pro
- All eight checks, including placebo and cluster-adjusted significance.
- Unlimited runs.
- Plain-English descriptions compiled to a spec (still with the mandatory confirmation step).
- Diagnostic attribution with case-study links, and user-committed floors.
- The interactive trade chart and trade-by-trade comparison.
Research
- Everything in Pro.
- The custom-indicator admission pipeline.
Billing
Free is $0 with no card. Pro is $29/month or $290/year; Research is $129/month or $1,290/year. Payments run through Lemon Squeezy as merchant of record — they are the legal seller and handle tax, invoices, and cancellation, all from their customer portal. Your plan is whatever your subscription says; there is no way to set it by hand. Manage it on the Billing page.