Privacy Policy

1. Who we are

This policy explains how AllCalcHub, the website at allcalchub.com (“we”, “us”), handles information about visitors. For data protection laws such as the GDPR, we are the controller of the limited personal information described here. For any privacy question or request, email allcalchub@gmail.com.

2. What we collect, in brief

• The numbers you enter: not collected. Calculations run in your browser and are not sent to us.
• Settings on your device: stored in your own browser only (see section 4).
• Technical data: recorded automatically by our hosting provider and by Google when pages and ads load (sections 5 and 6).
• What you send us: if you email us, your email address and message.

We do not ask you to create an account, and we do not knowingly collect sensitive information such as health records, financial account numbers or government IDs.

3. Your calculations

Every calculation runs in your browser. The numbers you type are not sent to our servers and we do not store them. The numbers you enter are also added to the page address in your browser, so a bookmark or a refresh keeps them. If you copy that address and send it to someone, they will see your numbers.

4. What is saved on your device

To make the site easier to use, a few settings are saved in your browser’s local storage. They stay on your device, are not sent to us, and you can clear them at any time:

• your calculator history (the last 30 calculations) and calculator layout;
• calculators you saved or used recently;
• your light or dark theme, your region (worked out from your browser to choose a currency and units), and whether you prefer Quick or Learn mode;
• contraction timer entries, if you use that tool.

To remove them, clear the history from the calculator, or clear this site’s data in your browser settings.

5. Information collected automatically

Like almost every website, our hosting provider automatically records basic technical information when your browser requests a page, such as your IP address, browser and device type, the page requested, the referring page and the time. This is used to deliver the site, keep it secure, prevent abuse and fix problems, and is kept only as long as needed for those purposes. We also use Cloudflare Web Analytics, which counts visits, pages viewed and the visitor's country without cookies and without identifying anyone.

We use Google Analytics to count visits and see which calculators are useful. It records the pages you view, general device and location information (country or city level), and a few anonymous events such as “a calculation was completed”. It never receives the numbers you enter, your results or your search words. Where consent is required, Google Analytics does not set cookies until you agree. You can also install the Google Analytics opt-out add-on.

6. Advertising and cookies

The site is free because it shows ads. We use Google AdSense. Google and its partners may use cookies, device identifiers and similar technologies to show ads, to limit how often you see an ad, to measure ad performance and to prevent fraud. Where allowed, these ads may be personalised based on your visits to this and other websites.

• Third-party vendors, including Google, use cookies to serve ads based on your previous visits to this website or other websites. Google’s use of advertising cookies lets it and its partners serve ads to you based on those visits. Learn more in how Google uses information from sites that use its services.
• You can turn off personalised ads in Google’s Ads Settings, and opt out of other vendors’ personalised ads at aboutads.info and, in Europe, youronlinechoices.eu. You can also block or delete cookies in your browser settings.
• Visitors in the European Economic Area, the UK and Switzerland see a consent message from Google, a certified consent management platform, before any advertising or analytics cookies are stored. Until you choose, ads are limited and no ad cookies are set. You can change your choice at any time with “Privacy choices” at the bottom of every page.

Ads are labelled “Advertisement” and kept apart from calculator inputs, buttons and results. We do not control which ads Google shows.

7. Why we use information (legal bases)

• Running and securing the site (server logs, saved settings): our legitimate interest in providing a working, safe website.
• Advertising and analytics cookies: your consent where the law requires it (for example in Europe and the UK), and otherwise our legitimate interest in funding a free service.
• Replying to your emails: our legitimate interest in answering you, or taking steps you ask for.
• Legal obligations: where we must keep or disclose information by law.

8. Who we share information with

We do not sell your personal information for money and we do not share the numbers you enter with anyone. Information is handled by:

• our hosting and content delivery provider, Cloudflare, to deliver the site and count visits;
• Google, for advertising, analytics and email (we use Gmail), under Google’s own privacy policy;
• authorities or others where the law requires it, or where needed to protect our rights, the site or other people.

Under some US state laws, such as California’s, showing personalised ads can count as “sharing” personal information for cross-context behavioural advertising. You can opt out using the choices in section 6; we also honour the Global Privacy Control signal where the law requires it.

9. International transfers

Our providers, including Google, may process information in countries other than yours, including the United States. Where the law requires it, they use approved safeguards such as standard contractual clauses.

10. How long information is kept

Settings on your device stay until you clear them. Server logs are kept only for as long as our hosting provider needs them for security and operation. Emails you send us are kept as long as needed to deal with your message and then deleted, unless we must keep them by law. Google keeps advertising and analytics data according to its own policies.

11. Security

The site is served only over encrypted HTTPS connections and is built as static pages without accounts or databases, so there is very little personal information to protect in the first place. Even so, no website or internet transmission is completely secure, and we cannot guarantee the security of information sent over the internet.

12. Children

People of all ages use calculators, and the site is suitable for children using it with a parent, guardian or teacher. It is not directed at children under 13 (or the age of digital consent where they live, such as 16 in some European countries), and we do not knowingly collect personal information from them. If you believe a child has sent us personal information, email allcalchub@gmail.com and we will delete it.

13. Your rights

Depending on where you live, including under the GDPR in Europe and the UK, privacy laws in US states such as California, India’s Digital Personal Data Protection Act, and similar laws elsewhere, you may have the right to:

• ask what personal information we hold about you and get a copy;
• ask us to correct or delete it;
• object to or limit how it is used, or withdraw your consent at any time (this does not affect earlier use);
• opt out of personalised advertising, as described in section 6;
• complain to your local data protection authority.

Because we don’t hold accounts or store your calculations, we usually hold very little about you. To make a request, email allcalchub@gmail.com. We may need to ask for details to confirm the request is genuine, and we will not treat you differently for using your rights.

14. Links to other sites

Some pages link to official sources and other websites. Their privacy practices are their own; please read their policies.

15. Changes to this policy

We may update this policy, for example if we change providers or add features. The date at the top shows the latest version. See also our Terms of Use, or contact us.