Age and information for parents

1. What Eolin is and how a campaign works

Eolin is a platform for educational campaigns at secondary schools. The school puts up QR codes, students scan them with their phones during breaks and open the short quizzes, videos, tips and challenges behind them. For completed activities they earn points for themselves, their class and their school. The app runs in the browser, nothing is installed, and participation is free and voluntary.

The platform is operated by Arwell Works s.r.o. Each campaign is run by a specific organiser – for example an educational association – named in the campaign rules. Arwell and the organiser are jointly responsible for the data (details in the Student privacy notice).

2. Age

The game. Any student at a participating secondary school can take part, including students in the lower years of multi-year grammar schools. We set no age limit for the game, because the game does not require consent to data processing and does not collect data that could directly identify a child: the child plays under a nickname generated by the app and chooses only their school, year and class.

E-mail only from 15 / 16. The ambassador programme and the e-mail reminder about the next campaign are based on the student's consent. Under the law, a child can give consent to such online services on their own from the age of 15 in the Czech Republic (Section 7 of Act No. 110/2019 Coll.) and from 16 in Slovakia (Section 15 of Act No. 18/2018 Coll.). We do not offer these features to younger students and do not accept an e-mail address from them. We check age with a question the student answers themselves; we do not ask for a date of birth. If we find that a younger student has signed up, we delete their e-mail address and the related data.

3. What we know about a child

• the generated nickname and the chosen school, year and class;
• their activity in the campaign: completed activities, quiz answers (correct/incorrect), points, competition days;
• only for ambassadors or for the reminder: an e-mail address.

We do not collect the child's name, phone number, date of birth, photos or location. We store answers to research surveys separately from the child's profile (for comparison surveys at the start and at the end of the campaign, within 7 days at the latest). We delete or irreversibly anonymise campaign data no later than 60 days after the campaign ends.

4. What is publicly visible

Leaderboards are public. For students they publicly show only the nickname and points, and in the final results also the school; for classes, the class name and the school. Only signed-in participants of the same campaign see the class next to a nickname, and only in the app. After the campaign ends, the organiser publishes the winners' nicknames and schools. The child's name is never published anywhere.

We don't ask for a name or an e-mail address to play; every player has a randomly generated nickname. Because the class is not shown publicly next to the nickname, it is harder to tell whose profile it is. Classmates who play the same campaign do see the class next to the nickname in the app, though, so some of them may be able to tell whose profile it is.

5. Your child's safety in the app

• No contact with strangers. The app has no chats, comments, messages between users or photo uploads. Ambassadors can send us an idea in writing; only authorised Arwell staff see it, not other users.
• No purchases or payments. Participation is free and nothing can be bought in the app.
• No tailored advertising. We do not use children's data for advertising or for profiling for advertising purposes, we do not sell it and we do not share it with partners.
• Partners and prizes. Prizes, vouchers and digital codes may be donated by campaign partners; we show their name or logo next to the prize concerned. The child redeems a voucher code with the partner themselves – we pass nothing about the child on to the partner. Any content supplied or paid for by a commercial partner will always be clearly labelled as a commercial communication.
• Content. The campaign content is prepared by its organiser, who is responsible for it; Eolin is intended for educational campaigns. Some tips (e.g. podcasts, books, films) may link to third-party websites, which have their own rules.
• No tracking outside the app. We do not use third-party advertising or analytics cookies.

6. Prizes

The organiser does not collect the winners' names. It contacts the school's management and hands the prize over to the school. The school identifies the winner in the class, and the winner proves the prize is theirs by showing the winning profile on their own device. Cash prizes for a class go to the account of the school or of the parents' association. Details are set out in the campaign rules.

7. Your rights as a parent

As a legal guardian, you can exercise your minor child's rights under the GDPR (until the age of 18): you can ask what we know about the child, or ask for correction or deletion, or object to the processing. Older students can also exercise their rights themselves, and we take their age, maturity and interests into account. The age of 15 (in the Czech Republic) or 16 (in Slovakia) only determines when a student can give consent to the e-mail features on their own (section 2).

Your child can ask for their data to be deleted themselves, right in the app (Profile → “Delete my data”); a request sent from their device shows by itself that the profile is theirs, and we handle it within one month at the latest. You can also send it together with them.

If you ask another way: because the child's profile contains no name, we need to recognise it by the device the child plays on: you therefore need to show that the profile belongs to your child – typically by showing it to us open on the child's device. We will agree the specific procedure with you; a screenshot of the leaderboard alone is not enough, because the leaderboard is public. We recognise ambassadors and reminder subscribers by their e-mail address.

The ambassador programme and the reminder can be ended at any time – in the ambassador account, or via the link in every e-mail respectively – or on request using the contacts below.

You also have the right to lodge a complaint with the Office for Personal Data Protection (Úřad pro ochranu osobních údajů, www.uoou.gov.cz) or, as the case may be, with the Office for Personal Data Protection of the Slovak Republic (Úrad na ochranu osobných údajov SR, www.dataprotection.gov.sk).

8. Contact

• Arwell Works s.r.o.: privacy@arwell.works
• Campaign organiser: the contact given in the campaign rules (for Velvet Week 2026: pauzanasamet@clubalpbach.cz).
• Your child's school can also answer questions about the school's participation.