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Privacy Policy

Last updated: April 2025

1. Who we are

Casper Prep Test (casperpreptest.com) is an independent practice tool for students preparing for the written section of the CASPER assessment. It is not affiliated with, endorsed by, or operated by Acuity Insights, who administer the official CASPER test.

2. What data we collect

When you create an account or use the service, we collect:

  • Account data — your full name and email address, provided when you register.
  • Authentication data — a hashed password managed by Supabase Auth. We never store plaintext passwords.
  • Practice content — the written responses you submit during timed sessions, along with AI-generated scores, feedback, and quartile bands.
  • Billing data — subscription status and billing history, managed by Stripe. We do not store payment card details; Stripe handles all payment data.
  • Usage data — session timestamps, attempt counts, and account preference settings.

3. How we use your data

  • To create and manage your account.
  • To deliver your practice sessions, scores, and feedback.
  • To process subscription payments through Stripe.
  • To enforce usage caps and rate limits on the service.
  • To send transactional emails (email verification, billing notifications). We do not send unsolicited marketing email.

We do not sell your data. We do not use your written practice responses for advertising targeting.

4. AI processing

Your written responses are sent to a third-party AI provider (OpenAI or Anthropic, depending on your account settings) to generate scores and feedback. By using the service, you consent to this processing. Please review the privacy policies of OpenAI and Anthropic for details on how they handle data submitted via their APIs.

5. Data storage and security

Account data, practice sessions, and feedback are stored in Supabase, a hosted database service. Data is encrypted at rest and in transit. We apply access controls to ensure only you can view your practice history.

6. Third-party services

  • Supabase — database and authentication.
  • Stripe — payment processing and subscription management.
  • OpenAI / Anthropic — AI scoring of written responses.
  • Vercel — hosting and serverless infrastructure.

Each provider has its own privacy policy and data processing terms. We only share the minimum data necessary for each service to function.

7. Data retention

Your account data and practice history are retained for as long as your account is active. If you wish to have your data deleted, contact us at the email below and we will process your request within 30 days.

8. Cookies and sessions

We use a session cookie to keep you signed in. No advertising or third-party tracking cookies are used.

9. Your rights

You can access your practice data at any time from the history page. You can update your account settings from the settings page. To request deletion of your account and all associated data, contact us directly.

10. Contact

For privacy questions or deletion requests, contact us at admin@casperpreptest.com.