Myth vs Machine

Legal

Privacy Policy & Terms

Last updated: 25 September 2026

1. Who we are

Myth vs Machine is an interactive online course available at mythvsmachine.com.

The data controller (administrator danych) is Cezary Pastor, ul. Kredytowa 8/43, 00-062 Warszawa, Poland. For any data-related requests, contact hello@mythvsmachine.com.

2. What data we collect

  • Account data: email address and display name, collected only when you register. Required to save your progress and issue access to paid content.
  • Purchase data: processed by Stripe, Inc. We do not store card numbers. We receive a Stripe customer ID and payment confirmation.
  • Usage data: which steps you completed, your progress through playgrounds, and timestamps. Used to restore your session and display progress.
  • Technical data: IP address, browser type, and anonymised access logs retained for up to 30 days for security purposes.
  • Aggregated analytics: page views and custom events (e.g. checkout started, purchase completed) via Plausible Analytics — aggregated statistics without cross-site tracking or advertising profiles (see section 5).

3. Why we use your data (legal basis)

  • Contract performance: to provide the course you purchased.
  • Legitimate interest: to keep the service secure, prevent abuse, and understand aggregated traffic to improve the product.
  • Legal obligation: to keep purchase records as required by tax law.

We do not sell your data to third parties.

4. Third-party processors

  • Supabase: database and authentication (EU region).
  • Stripe: payment processing.
  • OpenAI / API providers: live sandbox prompts are sent to the model API to generate responses. Prompts are not stored by us after the response is returned.
  • Vercel: hosting and edge network.
  • Plausible Insights OÜ ([Plausible Analytics](https://plausible.io/)): privacy-oriented web analytics. Traffic data is processed on EU-owned infrastructure; Plausible does not use cookies for analytics and does not build individual advertising profiles. See Plausible's privacy policy and data policy.

5. Cookies & analytics

5.1 Strictly necessary cookies

A session cookie from Supabase keeps you signed in. Without it, accounts, saved progress, and paid access cannot work. You can remove it by signing out or clearing site data in your browser.

5.2 Plausible Analytics (no marketing cookies)

We use Plausible to measure aggregated traffic and conversions (such as Begin Checkout and Purchase events after a successful payment). Plausible is designed to work without analytics cookies and without cross-site tracking. We do not use Google Analytics on this site.

Because Plausible does not store personal data in your browser for analytics, we do not show a separate “accept/reject analytics cookies” banner for Plausible. Only the necessary session cookie applies by default.

You can still limit tracking with browser ad blockers or Do Not Track; that may block Plausible scripts entirely.

6. How long we keep data

  • Account and progress data. For as long as your account is active, or up to 3 years after your last login.
  • Purchase records. 5 years as required by Polish tax law (art. 74 ustawy o rachunkowości).
  • Technical logs. 30 days.
  • Plausible analytics. Retention follows our Plausible plan settings (see Plausible dashboard).

7. Your rights (RODO / GDPR)

Under the GDPR (Regulation 2016/679) you have the right to:

  • Access: request a copy of your personal data.
  • Rectification: correct inaccurate data.
  • Erasure: delete your account from Account or ask us by email.
  • Restriction: limit how we process your data.
  • Portability: receive your data in a machine-readable format.
  • Objection: object to processing based on legitimate interests (including aggregated analytics).

To exercise any right, email hello@mythvsmachine.com with subject line “GDPR request”. We will respond within 30 days.

You also have the right to lodge a complaint with your national supervisory authority. In Poland: UODO (Urząd Ochrony Danych Osobowych), ul. Stawki 2, 00-193 Warszawa, uodo.gov.pl.

8. Terms of use

  • The course content is for personal, non-commercial use only.
  • You may not share your account or redistribute course materials.
  • The sandbox runs real AI model calls. Do not submit personal data, illegal content, or content that violates the model provider's terms of service.
  • We reserve the right to suspend accounts that abuse the sandbox allowance.
  • The course is provided “as is”. We are not liable for decisions made based on course content.

9. Refund policy

We offer a full refund within 30 days of purchase if you have not completed a substantial part of the course (self-serve: at most 2 paid playgrounds completed). Each account may use self-serve refund once. Request it from your account when eligible, or email hello@mythvsmachine.com.

10. Changes to this policy

We may update this page. The “Last updated” date at the top will reflect any changes. Continued use of the service after a change constitutes acceptance.

Questions? Contact us