Privacy Policy

MATERRA · materra.club

Last updated: August 23, 2026

MATERRA is a platform where people join private communities to chat, read materials, and receive notifications. This document explains what data is collected in the process and what happens to it.

1. Who is responsible for the data

The account, email address, technical data, and the operation of the platform itself are managed by its owner, Oleg Minkin (Argentina). For any questions about data: [email protected] - response and fulfillment of the request within 30 days.

The community's creator is responsible for what happens within it: they decide who to invite, what to publish, and how to interact with members, and in this regard, manage data on par with the platform. A community can be hosted at its own web address; this does not affect the distribution of responsibility.

You can contact either of them: both the platform and the creator are obligated to accept your request and not send you back and forth to each other.

2. What data is processed

Account: email address, name, profile picture; when signing in through Google - the Google account identifier.
Your content: messages, files, and reactions in rooms—which is what the community sections where chatting occurs are called—as well as which of them you enter.
Date, time, and place of birth- if your community has a section with personal calculations and you have entered this information. This section is optional: the platform works completely without it.
Technical: IP address, device and browser type, service logs; notification subscription and link to Telegram - if you have enabled them.

The platform does not accept payments and does not process payment data: card details are not transmitted to it or stored on it.

3. Communities and their creators

The platform provides a community creator with space and tools. The creator sees the names and messages of their community's members but does not have access to their email addresses and technical data—those are managed only by the platform. The terms of participation in the community itself, including payment, are set by the creator, who is responsible for them to the members.

The creator is obligated to handle their members' data in accordance with the law and this policy. In case of a violation, the platform has the right to block the community's access.

4. Why and on what basis

To make the platform work: access, rooms, notifications, responses to inquiries. The basis is theterms of use, which you accepted upon registration.

Service logs and protection against abuse are a legitimate interest of the platform owner for its security. Birth information and notifications are based on your consent, which can be withdrawn at any time.

Data is not sold, transferred to advertisers, or used for advertising and profiling.

5. Who data is shared with

Only with contractors without whom the platform cannot operate, and only to the necessary extent: Supabase (database and login), Hetzner (servers), Cloudflare (network and file storage), Google (login via Google), Resend (emails), Telegram (notifications - only if you have linked the account with the bot).

If a community has a section with personal calculations, their description is generated by a language model: access to it is via OpenRouter (USA), and the model itself is Google Gemini. Only the finished results of the calculation are passed to it; it does not receive your name, email address, or date of birth.

Data is not transferred to other third parties, except in cases where required by law.

6. Where data is stored

In the European Union and the European Economic Area: the application is on a server in Finland (Hetzner, Helsinki), the database is in Germany (Supabase, Frankfurt), and the delivery network and file storage are Cloudflare. Google is located in the USA; data transfer there is based on the standard contractual clauses of the European Commission.

7. How long data is stored

As long as the account exists. After its deletion, for up to 30 days, and then it is erased. Messages sent to a common room remain in its chat history after account deletion—at your request, they are also deleted.

Backups of the database are made by its provider (Supabase) and stored for a limited time, after which they are overwritten—deleted data disappears from there as well. The copies are used only for recovery after a failure.

8. Your rights

To obtain a copy of your data, correct it, delete your account, restrict its processing or object to it, withdraw consent, and also to file a complaint with your country's data protection supervisory authority. An email to [email protected].

9. Account deletion

Write to [email protected] - the account and its associated data are deleted within 30 days.

10. Cookies

Only those without which login and session cannot work. There are no advertising, analytical, or third-party tracking cookies.

11. Age

The platform is intended for adults. If we learn that an account was created by a minor, we delete it.

12. Changes

The date at the top is the latest revision. Significant changes are announced within the platform.

13. In case of a data breach

In the event of a breach that could harm you, we will inform you and the supervisory authority as soon as we become aware of it, without delay.

14. Applicable Law

The platform owner lives in Argentina, so the Argentine law on personal data protection (25.326) applies. If you are in the European Union, GDPR also applies to the processing of your data. You have the rights from section 8 in any case.