Privacy policy

What Calclulo does with your information. Last updated 1 November 2026.

The short version

• The numbers you type into a calculator are worked out on your device. They are not sent to us.
• There are no accounts. We don't ask for your email address or keep any profile about you.
• There are no ads, no tracking pixels and no session recordings.
• Google Analytics runs only if you press Accept all in the cookie banner.
• We don't sell personal data.

What you type into calculators

Salaries, loan amounts, health measurements, dates of birth: all of it is processed by code already downloaded to your browser. Nothing travels to our servers.

If you press Accept all, your browser also remembers the last values you entered in each calculator and the last twenty calculations in the global calculator. That is stored on your device only, and Essential only removes it. Exports (image, PDF, spreadsheet) are made in your browser and saved to your device. The Share button creates a link containing your values. Nothing is sent when you press it, but anyone who has the link can read those values, so only share it with people you trust.

Analytics

If you choose Accept all, Google Tag Manager and Google Analytics load and set cookies such as _ga so we can count visits and see which pages are used. If you choose Essential only, or ignore the banner, neither is loaded. The cookie policy lists what is stored.

Who else handles data

• Vercel hosts the site. Like most hosts it keeps server logs that can include your IP address, the page requested and your browser type. We don't use them to profile visitors, and Vercel sets how long they are kept.
• Google, only if you accept analytics.

Fonts, icons, scripts and styles come from Calclulo itself. Without Accept all, opening a calculator does not contact any third party, apart from the exchange-rate request described next on finance pages.

Exchange rates#

Finance calculators can show amounts in other currencies. When you open one and the saved rates are over three hours old, your browser asks a public exchange-rate service for fresh ones. The request goes directly from your device, and the service can see your IP address like any website. We send no inputs or results with it. We try ExchangeRate-API first and fall back to two public currency feeds, one of them delivered through jsDelivr. Rates are for information and may differ from your bank's.

If you email us

We keep your message and our reply so we can follow up on what you reported, and we use your address only to answer you. Ask and we'll delete the conversation.

How long we keep things

• Values remembered in your browser stay until you clear them.
• The cookie that stores your cookie choice lasts twelve months.
• Server logs follow Vercel's own schedule.

Your rights

Laws such as the Nigeria Data Protection Act 2023 and the GDPR let you ask what we hold about you, have it corrected, get a copy, have it deleted, and object to how it is used. Email hello@calclulo.com. We aim to respond within 30 days. If you're unhappy with the outcome, you can complain to your local data protection authority.

Why we may use your data

The consent cookie and your host's security logs: the site can't run safely without them. Everything else stored in your browser, and analytics, depend on your consent, which you can withdraw whenever you like from the cookie settings.

Security

Connections to Calclulo are encrypted. No system is perfectly safe, and the small amount of data we collect is part of the protection. If a problem affects your information, we will tell you and the relevant authority as the law requires.

Children

Calclulo isn't aimed at children, and we don't knowingly collect data from anyone under 13.

Other sites

Our footer links to our social profiles. Those sites have their own privacy policies, and we don't control what they collect once you leave.

Changes

If our practices change, we'll update this page and its date before the change takes effect. If a change affects your data in a way you wouldn't expect, we'll say so on the site.

Contact

Privacy questions or data requests: hello@calclulo.com. The cookie policy lists exactly what is stored on your device.