Privacy Policy

1. Introduction

This Privacy Policy explains how Pentecost Publishing collects, uses, and protects your personal information when you visit our website (pentecost.pub) and use our services.

We are committed to protecting your privacy and handling your data in an open and transparent manner in accordance with the General Data Protection Regulation (GDPR) and Polish data protection laws.

2. Data Controller

The data controller responsible for your personal data is:

3. Information We Collect

We collect minimal information to provide you with our services:

3.1 Information Collected Automatically

• Browser type and version
• Operating system
• Referring website
• Pages visited and time spent
• Language preferences (stored locally in your browser)

3.2 Information You Provide

• Name and email (if you contact us)
• Review information (name and review text, if you submit a review)
• When you purchase books directly on our website: email address, and for physical books your full shipping address (name, street, city, postcode, country, phone). Payment card details are entered directly into Stripe and are never stored or received by us.

4. How We Use Your Information

We use the collected information for the following purposes:

• To provide and maintain our website and services
• To respond to your inquiries and support requests
• To improve our website and user experience
• To display reviews on our book pages
• To remember your language preferences
• To process direct purchases (payment via Stripe), deliver e-books by email, and ship physical books to your address

4.1 Research on how our method works

Everyone who uses our reader and exercises — on pentecost.pub, in our app from the App Store and in our app from Google Play — takes part in our research on how well the Pentecost method works. We use data about how you read, listen and do exercises to measure whether, and how quickly, readers' understanding of the language grows, and to improve our books and the app. E-books that you download and read in other apps send us no data.

What we record: which book and chapter you are reading and how far you have got; how long and how fast you read; which words you tap to see a translation; when and how you use the audio and the karaoke mode; your answers and scores in exercises and games; the level you chose; the app version and the type of device. We do not record your location, contacts, microphone, camera or advertising identifier.

How we protect these data: for research we store them under a random research number instead of your name or email address. Only the Pentecost team works with them. We never sell these data and we do not pass them on to other companies or institutions. The only exception is technical providers who store data on our behalf (for example server hosting) under a data processing agreement; they may not use the data for any other purpose.

What we publish: scientific articles and our annual reports contain only anonymous, aggregated results, for example averages for groups of readers. No individual person can be identified from them. If we work with university researchers, they receive only anonymised data.

Legal basis: our legitimate interest in evaluating and improving our teaching method (Article 6(1)(f) GDPR), with the safeguards for scientific research required by Article 89 GDPR. You do not need to do anything, and this does not change how the app works.

Your choice: you can object to the use of your data for research at any time by writing to [email protected]. We will then exclude you from our analyses and delete your research data. The app will keep working exactly as before.

How long we keep these data: research data linked to a research number are kept for up to 5 years and then deleted or irreversibly anonymised. If you delete your account, we delete the research data linked to it. Results that have already been published remain, because they are anonymous.

We do not use in our research the data of people we know to be under 16.

5. Local Storage

Our website uses local storage in your browser to save your language preferences and your shopping cart contents (books you have added). This data stays on your device until you complete a purchase or clear it. You can clear this data at any time through your browser settings.

6. Cookies and Analytics

Our website uses cookies for basic site functionality. We use Google Analytics to understand how visitors use our site. We may use Google Ads for advertising purposes. Stripe (our payment provider) may set cookies necessary for secure payment processing. Where required by law (e.g. in the EEA), we obtain your consent before using non-essential cookies. You can manage cookie preferences in your browser settings.

7. Third-Party Services

For direct purchases on our website, payment is processed by Stripe. Your card details are entered directly into Stripe's secure form and we never see or store your full payment card information. Stripe's privacy policy applies to payment data: stripe.com/privacy.

When you purchase our products through third-party platforms (Amazon, Apple Books, Google Play Books, Empik), your transaction data is handled according to those platforms' privacy policies. We do not receive your payment or shipping information from those platforms.

Our website may contain links to external websites. We are not responsible for the privacy practices of these external sites.

8. Your Rights (GDPR)

Under the GDPR, you have the following rights:

• Right of access – You can request copies of your personal data
• Right to rectification – You can request correction of inaccurate data
• Right to erasure – You can request deletion of your personal data
• Right to restrict processing – You can request we limit how we use your data
• Right to data portability – You can request transfer of your data
• Right to object – You can object to processing of your personal data

To exercise any of these rights, please contact us at [email protected].

9. Data Security

We implement appropriate technical and organizational measures to protect your personal data against unauthorized access, alteration, disclosure, or destruction.

10. Data Retention

We retain personal data only for as long as necessary to fulfill the purposes for which it was collected. Contact inquiries are kept for up to 2 years. Reviews are kept as long as they remain published on our website. Order data (email, shipping address, order details) for direct purchases is retained for at least 5 years in accordance with Polish accounting law (Ustawa o rachunkowości), or longer if required by tax or other applicable regulations.

11. Children's Privacy

Our website is not directed at children under 16 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately.

12. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated revision date. We encourage you to review this policy periodically.

13. Contact Us

If you have any questions about this Privacy Policy or wish to exercise your rights, please contact us:

Email: [email protected]

You also have the right to lodge a complaint with the Polish data protection authority (UODO - Urząd Ochrony Danych Osobowych) if you believe your rights have been violated.