Privacy Policy
Last updated: 10 September 2026
Who is responsible
Xuantify is responsible for the processing of personal data described here.
- Name and legal form: Xuantify, sole proprietorship (eenmanszaak, Netherlands)
- Email: xuantify@gmail.com
- Website: https://xuantify.com
- Registered address and Chamber of Commerce number are available on request via the email address above.
What we process, and why
Newsletter sign-ups. If you enter your email address to subscribe, we store that address, your name if you give one, the moment you subscribed and the IP address you subscribed from — the last as evidence of when and from where consent was given. We use this only to send you the newsletter. You can unsubscribe using the link in every issue.
Signing in. Parts of the site — such as the full analysis view — require signing in with Google. When you do, we receive your name and email address from Google and store them so we can recognise you on your next visit.
Email to us. If you contact us by email, we keep that correspondence so we can reply.
Technical data. When you visit the site, our server records standard technical data such as your IP address, browser and the pages requested. This is used to run the site and to protect it against abuse.
IP addresses kept with specific records. Beyond that general logging, your IP address is stored alongside your newsletter subscription (see above) and alongside each sign-in event. It is kept for as long as that record itself is kept.
Legal basis
- Consent — for the newsletter. You can withdraw it at any time.
- Legitimate interest — for running and securing the website, and for recognising you when you sign in.
Who we share data with
We do not sell your data and we do not share it for advertising. We do rely on service providers who process data on our behalf:
| Service | What for | Where |
|---|---|---|
| Brevo | sending email and the newsletter | EU |
| signing in with Google | United States | |
| Hetzner | the server the site runs on | Germany |
Data processing agreements are in place with these parties; in Brevo's case the agreement forms part of the terms under which we use the service. Where a processor is outside the EEA, transfers happen under the European Commission's Standard Contractual Clauses.
How long we keep data
We keep data no longer than necessary. Where the law prescribes a period we follow it; where it does not, we have chosen one ourselves.
| What | How long | Why |
|---|---|---|
| Financial records | 7 years | statutory tax retention obligation |
| Newsletter subscribers | until you unsubscribe | consent |
| Account data | for as long as the account exists | to let you sign back in |
| Sign-in events | 12 months | security and abuse detection |
| Email correspondence | 2 years after last contact | to be able to pick up the thread |
Cookies and browser storage
The site sets no tracking cookies and uses no advertising cookies. What it does use:
- Your preferences — the light/dark setting is stored in your own browser, not on our server.
- Signing in — a session cookie, only once you sign in.
At the time of writing our public pages load no third-party scripts at all: no analytics, no social widgets, no embedded trackers.
Your rights
You have the right to access, correct or delete your data, to object to processing, and to data portability. Consent you have given can be withdrawn at any time. Contact us at xuantify@gmail.com.
If you believe we handle your data improperly you may lodge a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).
Security
The site is served entirely over HTTPS. Access to the administration area is restricted to authorised operators.
Children
The site is not directed at children under 16 and we do not knowingly collect their data.
Changes
We may update this policy. The current version is always on this page.