Legal

Terms of Service

Last updated: October 2026

These terms set out the basis on which you may use tailsnow.com (the "Site"). Using it means accepting them; if you do not accept them, do not use the Site.

The tool this page covers is TailsNow, a coin flip. Put simply, it flips a fair virtual coin with a real flip animation and tracks the head and tail history, and the way it does so is this: it draws each flip from the browser's cryptographically secure random source rather than a pseudo-random seed, so the sequence is not predictable from earlier flips, and it reports the running ratio of heads to tails so a fair coin visibly converges. Everything stated here applies to that tool and the values it handles, and to nothing else.

Practically, all the calculation needs is the coin toss itself. Typical reasons people open TailsNow include showing a class the law of large numbers, and in every case the work happens on the visitor's own device rather than ours.

The service we provide

TailsNow offers a coin flip, free to use, together with supporting explanations. Every result is an estimate computed from what you supply, following the method set out on the page itself. Results are provided for general information and convenience, and should be verified where a decision matters.

No duty of care created

Nothing here forms a client, advisory or fiduciary relationship. The Site is a tool, and how you act on its output is a matter for you.

Applicable law

The law that applies to these terms is that of the jurisdiction where the Site operator is established, ignoring conflict-of-law principles.

Checking a result yourself

These tools give a quick general answer. For anything with consequences, verify the result independently before you rely on it.

Errors and completeness

We take the method seriously and describe it openly, but we cannot promise every output is flawless or that the material stays current. Where a known margin of error applies, treat the figure as an estimate rather than a fact.

Permitted and prohibited use

Personal and professional use is fine. What is not: disrupting the Site, scraping it hard enough to slow it for others, passing it off as your own, or using it unlawfully.

Who owns what here

Unless credited otherwise, the Site's design, writing and code are ours or used under license. Linking to any page is welcome; copying large portions of the content needs our written consent.

Third-party content and advertising

Ads, served by outside networks, keep the Site free, and some pages link to third-party resources. We neither control nor vouch for external content. No advert affects any result.

Uptime and changes to the service

We make no guarantee the Site will always be available. Any tool or page may be changed or removed at any time, and the service is supplied "as is".

Limits on our liability

To the extent the law allows, we are not liable for consequential or indirect damages, nor for choices made on the strength of an output here.

Questions about these terms

Anything unclear in these terms can be raised through the contact page.