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Privacy Policy

Last updated: September 16, 2026

Summary in one paragraph

ProbLab does not collect personal data from you. We do not require an account, we do not store your inputs, and we do not run our own analytics. The only data collected on this site comes from third-party advertising (Google AdSense), which uses cookies and may use them to personalize ads. You can opt out of personalized advertising at any time via Google Ads Settings.

1. Data we do NOT collect

2. Google AdSense & third-party advertising

We display ads served by Google AdSense. Google, as a third-party vendor, uses cookies to serve ads on this site. Google's use of advertising cookies enables it and its partners to serve ads based on a user's visit to this site and/or other sites on the Internet.

Categories of data third-party ad vendors may process

3. Cookies in use on this site

CookiePurposeSet by
__gads, __gpi, IDEAd personalization, frequency capping, fraud preventionGoogle AdSense
CONSENTStores your consent state (in EEA/UK)Google

ProbLab itself does not set any cookies. Tailwind CSS (loaded from a public CDN) is purely a stylesheet; it does not set cookies.

4. EEA / UK visitors

If you are in the European Economic Area or the United Kingdom, Google is required to obtain your consent before using advertising cookies. AdSense typically shows a consent dialog (the "Consent Mode" prompt) on your first visit. By continuing to use the site after that prompt, you consent to the categories you selected.

5. Children's privacy

ProbLab is suitable for educational use, but we do not knowingly direct advertising to children under 13. If you are a parent and believe your child has interacted with personalized ads on this site, you can clear the cookies in your browser and adjust Google Ads Settings to disable interest-based advertising.

6. Your rights

Depending on your jurisdiction, you may have rights to access, correct, or delete personal data held about you. Because we do not hold personal data on our side, most requests are most efficiently directed to Google via Google Ads Settings or Google's advertising help page.

7. Changes to this policy

We may update this privacy policy from time to time. The "Last updated" date at the top will always reflect the latest revision. Material changes will be summarized in the About / Changelog page.

8. Contact

Privacy questions: privacy [at] problab.example.

Frequently asked questions

How do I use Privacy Policy step by step without mistakes?
Follow the order given in the usage section: ProbLab's privacy policy. We don't collect personal data. We use Google AdSense, which uses cookies and may use advertising cookies for ad personalization. The step-by-step part matters less than the unit check that sits inside it. Confirm every unit matches the thing you are actually trying to measure before you press calculate - that single check catches more wrong answers than any other habit, and it costs about ten seconds.
What are the common mistakes when using Privacy Policy?
Most common mistakes come down to four habits: entering 20 when the field expects 0.2 because the field is a percentage; leaving a field blank and accepting the default without checking what it stands for; changing one input and reading a result that was calculated before the change; and quoting the output as an exact figure when the page describes it as a reference estimate. Press calculate again after any edit, and treat the number as a reference point rather than a final answer.
How do I read the result from Privacy Policy?
Read the final figure first, then come back to this section for the conditions behind it: ProbLab's privacy policy. We don't collect personal data. We use Google AdSense, which uses cookies and may use advertising cookies for ad personalization. Keep two things apart: the number itself, which comes from the values you typed, and the assumptions it depends on, which decide whether that number is meaningful. The page sets out what a higher or lower result means for your case, so check that direction as well as the magnitude.
Can I act on the Privacy Policy result directly?
Treat it as one reference sheet before you decide, rather than as the answer itself: ProbLab's privacy policy. We don't collect personal data. We use Google AdSense, which uses cookies and may use advertising cookies for ad personalization. The output describes a magnitude under the conditions you entered. It does not include what it actually costs to act, what might change while you act, or how the other side behaves. Before you commit, compare the result against reality and note which assumptions do not hold where you are.