Privacy Policy
Last updated: 29 September 2026
This policy explains what personal data SurfCalc collects through this website, the free trial form, the SurfCalc desktop application's licensing, and support email, why, and what rights you have over it. It is written to meet the EU General Data Protection Regulation (GDPR) and Spain's Organic Law 3/2018 on data protection (LOPDGDD).
1. Who is responsible for your data
Data controller: Mahy Soler, trading as SurfCalc
Postal address: see the Legal Notice
Contact: support@surfcalc.com
SurfCalc is a small operation and has not appointed a Data Protection Officer, which is not required at its scale. Write to the address above for any privacy question or request.
2. What we collect and why
| Data | Purpose | Legal basis (GDPR) |
|---|---|---|
| Name, email address, and company or institution, entered on the trial form | Issuing your trial key, emailing it to you, and following up on your evaluation (help getting started, a reminder before the trial ends) | Performing the service you requested (Art. 6(1)(b)); follow-up about your own trial: legitimate interest (Art. 6(1)(f)) |
| Your email address and name, if you tick the product-updates box | Occasional emails about SurfCalc releases and features | Your consent (Art. 6(1)(a)), which you can withdraw at any time |
| License key, a hardware fingerprint of the computer you activate on (a one-way hash, not your hardware serial numbers), your IP address, and activation/validation timestamps | Activating and validating your license or trial, enforcing its terms (including one trial per computer), and preventing misuse | Performing the license or trial terms (Art. 6(1)(b)); fraud prevention: legitimate interest (Art. 6(1)(f)) |
| Anything you include in an email to support | Answering your question or fixing the problem you report | Performing the service (Art. 6(1)(b)) or legitimate interest in answering enquiries (Art. 6(1)(f)) |
| Anonymous page-view statistics | Understanding which pages are useful | Legitimate interest (Art. 6(1)(f)); no cookies are used and no individual visitor is identified |
Your engineering data stays on your computer. The SurfCalc application contacts the licensing service only to activate and validate your key. It never uploads your models, meshes, results, or project files.
We do not sell your data, use it for advertising, or make automated decisions about you that have legal or similarly significant effects.
3. Who processes it on our behalf
We use the following service providers ("processors"). Each processes data only on our instructions, under a data processing agreement.
| Provider | What for | Location |
|---|---|---|
| Vercel Inc. | Website hosting, the trial form's server function, anonymous page-view statistics | USA |
| Keygen | License and trial management; stores your trial's email and the activated computer's fingerprint | USA |
| Resend | Sending the trial email; the product-updates mailing list | USA (sent via Amazon Web Services, EU region) |
| Google (Workspace) | The support@surfcalc.com mailbox | EU / USA |
| Cloudflare, Inc. | Bot protection on the trial form (Turnstile), when enabled | USA |
| Google Fonts | Delivering this website's typeface; your browser requests it from Google, which receives your IP address | USA |
Transfers outside the EU. Where a provider is in the USA, the transfer is covered by the EU–US Data Privacy Framework if the provider is certified under it, and otherwise by the European Commission's Standard Contractual Clauses included in that provider's data processing agreement.
4. How long we keep it
- Trial records (form details, trial key, activated computer): up to 24 months after the trial ends, so that the one-trial-per-computer rule can be enforced and your evaluation history is available if you buy a license. Then deleted.
- Paid license records: for as long as you hold a license, and afterwards for as long as tax and accounting law requires.
- Product-updates list: until you unsubscribe (every email has a one-click unsubscribe link) or ask us to remove you.
- Support emails: up to 24 months after your last message, unless they relate to an active license.
5. Your rights
You can ask to access your data, correct it, delete it, restrict or object to its use, receive it in a portable format, and withdraw consent to product-update emails at any time. Write to support@surfcalc.com; we will answer within one month. Deleting your trial record ends your trial, and a computer that has already used a trial still cannot start another one.
If you believe your data has been handled unlawfully, you can complain to the Spanish Data Protection Agency (Agencia Española de Protección de Datos) or the data protection authority where you live.
6. Cookies
This website does not set cookies. Page-view statistics are collected without cookies and without identifying you, so no cookie banner is shown. If you enable bot protection on the trial form, Cloudflare Turnstile may use strictly necessary browser storage to tell people from bots; it is not used for tracking.
7. Age
SurfCalc is professional engineering software and is not intended for anyone under 16.
8. Changes to this policy
If this policy changes, the new version is published here with a new "Last updated" date. If a change materially affects how we use data you already gave us, we will tell you by email first.