Legal

Disclaimer

Last updated: October 2026

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.

For information, not advice

Everything on tailsnow.com is provided for general information and education. Results are estimates produced from what you enter, not measurements, and not professional advice. TailsNow is built to be useful, not authoritative.

General-purpose tools

The tools here return a fast, general answer. Where a TailsNow result carries a consequence — something that gets built from, filed, or paid — check it independently first.

External links

Any link to another site is provided for convenience. That content is outside our control and we are not answerable for it.

Advertising and independence

Adverts pay for the Site and nothing more. They cannot influence a result, and an ad appearing here is not a recommendation.

Provided without warranty

For TailsNow specifically, the operative assumption is that your input fits the case the tool is built for. 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. Outside that — and wherever rounding, unit handling or browser behavior intrudes — the Site offers no warranty of any kind; we take care over the method, but the result is what it is.

Your responsibility

You are responsible for checking that a result suits your situation before acting on it. If something looks wrong, tell us through the contact page — we would rather fix it than be right.