How this public preview works

Free material. Clear status.

Original practice, not a standardized IQ test. Speaking check-ins reflect your preferences; they do not measure speech or promise IQ gains.

Browser choices

Quiz answers are calculated in your browser. Choices stay in memory unless you explicitly choose to keep them in this tab. You can clear them from the quiz result. No name, email, health information, financial account or payment information is requested.

Website hosting

Cloudflare serves these pages and processes ordinary web requests. There are no advertising pixels, session replay, hosted AI, email integrations or real payment integrations on this public site.

Membership status

Membership enrollment, payment and production account access are unavailable. Perkwiz Inc, United States is the project entity. Support details, commercial address and final membership policies remain in preparation. This page explains the current preview; it does not offer unapproved purchase terms.