Privacy policy
Summary: this site does not use cookies and does not ask for any data to be read. We count visits without identifying you, and we only process your email address if you write to us or join a list.
Last updated: October 2026.
Controller
The data controller is Seetrex, part of wowinX, owner of SEEQuant and of seequant.app, including the Syndrome application (seequant.app/syndrome/). For any privacy question: info@seequant.app.
Analytics: Umami Cloud, without cookies
To learn which pages are visited we use Umami Cloud. It does not set cookies or persistent identifiers in your browser and does not store personal data. For each page view it records the address of the page, including its query parameters (what follows “?”, for example those of a campaign) but not the fragment (what follows “#”); the page title; the address of the page you came from (the referrer, as your browser sends it, also with its query parameters); the language, the screen size, the type of device and the country. It also records a few anonymous events (for example, that a tool was opened).
Legal basis: our legitimate interest in knowing which parts of the site are used, in order to improve them. Umami keeps these statistics for six months.
Forms
The interest list and the feedback form belong to this site, with no third-party form service: what you send reaches the site itself and is stored in its database.
- What for: on the interest list, to write to you about what you signed up for (the profile you chose and what you tell us). With feedback, to read it in order to improve the site and Syndrome and, only if you leave your email address, to reply to you. We do not use this data for anything else and we do not sell it.
- Legal basis: your consent, which you give by ticking the box on the form and can withdraw at any time by writing to info@seequant.app. Feedback without an email address needs no box: the text is all you send.
- What data: on the interest list, your email address, the profile you choose and the text if you write one; with feedback, your text and your email address only if you leave it. In both, the language of the page, the link you came from (for example, Syndrome’s footer) and the date. Never your IP address or anything about your browser.
- Who processes it: Cloudflare, Inc., as processor: it runs the site (Workers) and stores the submissions in its database (D1), which we set up in Cloudflare’s European Union jurisdiction. Normally, each submission also triggers an internal notice that Cloudflare’s email service (Email Routing) sends to the site owner’s mailbox, hosted by OVH SAS (France, EU). The notice carries everything you sent: your email address, your text, the profile, the language, the link of origin and the date. If you left your email address, we reply to you at that address. There is no notice when 30 have already been sent in the last hour or when sending it fails; what you sent is stored all the same. Apart from Cloudflare and OVH, as processors, nobody receives your email address or your text.
- How long: the interest list, until you withdraw your consent and at most 24 months from your submission; feedback, 12 months from its submission. What we delete remains for up to 30 days in the database’s recovery window (D1 Time Travel). The notices in the mailbox are deleted together with their submission (when we handle your request or when we purge the submissions past their period) and, at the latest, within the same periods.
- Your rights: write to info@seequant.app from the address you used and we will send you what we keep about it or delete it from both lists (interest and feedback) at once. Feedback without an email address cannot be linked to you: to delete it, tell us a literal piece of its text and its approximate date; we search for that text from that date and delete the one you confirm. Your other rights are below.
If you write to info@seequant.app, we use your address and your message only to reply to you. Email reaches us through Cloudflare’s forwarding service, in the site owner’s mailbox, hosted by OVH SAS (France, EU). How long: as long as needed to reply to you and at most 12 months from the last exchange.
Hosting
The site is served through Cloudflare, which technically processes the IP address of each request in order to deliver the pages and protect them from abuse.
International transfers
Cloudflare (Cloudflare, Inc.) and Umami (Umami Software, Inc.) are United States companies, so what they process for us (Cloudflare, delivering the pages, forwarding email and the forms database with its notice; Umami, the statistics) may involve an international transfer of data, even when the data is stored in the European Union. Cloudflare, Inc. participates in the EU-U.S. Data Privacy Framework (DPF) and its data processing agreement also incorporates the European Commission’s standard contractual clauses. OVH, which hosts the site owner’s mailbox (the notices and the email to info@), is in the European Union: there is no transfer there. To find out which safeguard Umami applies to that transfer, write to info@seequant.app.
Your browser’s local storage
The site does not use cookies. It stores in your browser’s localStorage only preferences that
you choose, which never leave your device and which you can delete from your browser settings:
| Key | What for |
|---|---|
seequant.language |
The language you choose with the language switcher. |
Syndrome shares its address with this site (seequant.app/syndrome/), so its storage also belongs to this site. It stores:
| Key | What for |
|---|---|
syndrome.language |
The application’s language. |
syndrome.theme |
The light, dark or automatic theme. |
syndrome.model |
The chosen noise model. |
syndrome.challenge |
Your challenge mode record: best score, streak, and puzzles played and solved. |
syndrome.challenge.open |
The puzzle in progress, so that reloading the page counts as giving it up. |
syndrome.spacetime.view, syndrome.spacetime.gap |
The preferences of the space-time viewer. |
Syndrome also keeps its own files in the browser cache so that it works offline. None of this is sent to anyone. You choose the preferences, and the rest (your record, the puzzle in progress and the offline copy) is needed to provide the service you ask for, so all of it is exempt from consent under art. 22.2 of the LSSI and the AEPD’s Guide on the use of cookies.
Your rights
You can ask for access to your data, its rectification or erasure, object to its processing or ask for its restriction or portability, and withdraw your consent at any time, by writing to info@seequant.app. If you believe we have not handled your request properly, you can lodge a complaint with the Spanish Data Protection Agency (aepd.es).
Changes
If what we do with data changes, we will update this page and its date.