Privacy policy
Short version: we do not store what you type into a calculator, we do not sell data, and advertising cookies are the only meaningful third-party processing on this site.
Who we are
This site (ayduke.com) is operated by Ayduke, London, United Kingdom, acting as the data controller for the processing described here. For any privacy question or request, contact privacy@ayduke.com.
What we do not collect
We do not require an account and we do not ask for personal details to use a tool. Specifically:
- Calculator inputs are not stored. Salary figures, dates of birth, body measurements, passwords, JSON payloads and everything else you enter are processed for the length of one request and then discarded. They are not written to a database and not logged.
- No tracking profile. We do not build behavioural profiles, we do not fingerprint devices, and we do not sell or rent data.
- No newsletter by default. We do not add you to any mailing list.
What is processed, and why
| Data | Purpose | Legal basis | Retention |
|---|---|---|---|
| Server request logs (IP address, timestamp, URL, user agent) | Security, abuse prevention, error diagnosis | Legitimate interests | Short term, then deleted or aggregated |
| Rate-limit counters (hashed IP) | Preventing automated abuse of the calculation API | Legitimate interests | Minutes |
| Contact form: name, email, message | Answering your enquiry | Legitimate interests / your request | Kept while relevant to the enquiry |
| Advertising and measurement cookies | Funding the site through advertising | Consent, where required | Set by the vendor — see cookie policy |
The contact form also stores a one-way hash of your IP address to deter spam. It cannot be reversed to an address.
Advertising: Google AdSense and third-party vendors
Ayduke is funded by display advertising served by Google. To do that, Google and its partners may set and read cookies or similar identifiers on your device.
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the internet.
- You can opt out of personalised advertising by visiting Google Ads Settings, or opt out of a third-party vendor's use of cookies for personalised advertising at aboutads.info and youronlinechoices.com.
- For details of how Google handles data from sites that use its services, see Google's partner sites policy.
Where consent is required (the UK, the EEA and Switzerland), advertising and measurement cookies are only used after you have given it, and you can change or withdraw your choice at any time through the consent control on the site or your browser settings.
Cookies we set ourselves
Almost none. The site works without cookies: your light/dark theme choice is kept in your browser's local storage, and the anti-forgery token used by forms is a signed value inside the page rather than a cookie. See the cookie policy for the full table.
Data processors and international transfers
We rely on a small number of providers: a web host that runs the site, and Google for advertising. Exchange rates are fetched by our server from the European Central Bank — your browser does not contact the ECB and no data about you is sent there.
Some providers process data outside the UK or the EEA. Where they do, transfers rely on the safeguards those providers have in place, such as the UK International Data Transfer Addendum or the EU Standard Contractual Clauses.
Your rights
Under UK GDPR and GDPR you can ask us to give you access to your data, correct it, delete it, restrict or object to processing, or provide it in a portable form. You can also withdraw consent for advertising cookies at any time.
Email privacy@ayduke.com and we will respond within one month. Because we deliberately store almost nothing, the honest answer to an access request is often that we hold no personal data about you beyond short-lived server logs.
If you are unhappy with our response you can complain to the UK Information Commissioner's Office (ico.org.uk) or your local supervisory authority in the EEA.
Children
Ayduke is a general-audience reference site and is not directed at children under 13. We do not knowingly collect personal data from children.
Security
The site is served over HTTPS with a strict content security policy, anti-forgery protection on every form, and rate limiting on the calculation API. Tools that reach out to the internet (DNS and HTTP header checks) block private network addresses to prevent misuse.
Changes to this policy
When this policy changes we update the date at the top of the page. Material changes are summarised here for at least three months.
Frequently asked questions
Do you store the salary or health figures I enter?
No. They exist only in memory for the fraction of a second it takes to compute your result, then they are gone. Nothing is written to disk or to a database.
Why do I see personalised ads?
Google and its partners may use cookies set during previous browsing to choose ads. You can switch to non-personalised advertising in Google Ads Settings or withdraw consent through the consent control on this site.
How do I get my data deleted?
Email privacy@ayduke.com. If you have used the contact form we will delete that message; otherwise there is usually nothing to delete beyond short-lived server logs.