# Rikai

> Rikai is a live USMLE question bank for people preparing for the exam, and an AI-native product. AI-powered study features are coming soon.

Rikai is Japanese for understanding. It is a study tool for people preparing for the USMLE. It is not medical advice, not clinical decision support, and not a guarantee of examination performance.

## What is live today

Rikai is a live USMLE question bank for people preparing for the exam. One subscription covers every question bank, tutor, timed and exam modes, a written explanation for every answer, notes, bookmarks, and progress across devices. Create a free account with Google and try a question.

Paid plans renew until canceled. Paddle is the merchant of record and handles payment, tax, and billing support. Cancel from the billing page, which opens the Paddle customer portal. Access continues through the period already paid for.

Sign-in is Google, through WorkOS. Study data is stored in Convex. Question-bank releases are delivered from Cloudflare R2. The site is hosted on Vercel. Transactional email is sent with Resend. Error monitoring uses Sentry.

Duff Corben, founder of Rikai, builds Rikai. There is no phone line and no live chat. A legal entity name is not published.

## What is next

Rikai is an AI-native study product. AI-powered features are coming soon. None of them are live today.

The question banks, written explanations, and study modes do not depend on those features and can be used without them.

- Coming soon: AI explanations. A planned AI walkthrough of why the right answer is right and why the others are wrong, beside the written explanation already on every question.
- Coming soon: AI tutor. A planned way to ask an AI tutor about the question you are studying, without leaving the block.
- Coming soon: AI study guidance. A planned suggestion of what to review next, drawn from the questions you missed, marked, or skipped.

None of these are in beta, and none are rolling out. "Coming soon" means not live.

## Contact

Email: duff.corben@getrikai.app
Support: help@getrikai.app
Contact page: https://getrikai.app/contact

## Pages

- [Home](https://getrikai.app/): the product, the live study tools, and what is next
- [About](https://getrikai.app/about): what Rikai is, who it is for, who builds it, and how AI is planned
- [Library](https://getrikai.app/library): the published question banks and question counts
- [Pricing](https://getrikai.app/pricing): the four billing options and what every plan includes
- [FAQ](https://getrikai.app/faq): banks, modes, devices, price, cancellation, and what is next
- [Support](https://getrikai.app/support): sign-in, access, cancellation, and account data
- [Contact](https://getrikai.app/contact): Duff Corben at duff.corben@getrikai.app
- [Privacy](https://getrikai.app/privacy): what Rikai collects and the service providers it uses
- [Terms](https://getrikai.app/terms): the study license and educational-use limits
- [Cookies](https://getrikai.app/cookies): authentication and study storage, no advertising cookies
- [Refunds](https://getrikai.app/refund): how to ask Paddle for a refund
- [Sitemap](https://getrikai.app/sitemap.xml)