Legal

Privacy Policy

Last updated: October 2026

RandZen ("we", "us") runs randzen.com. Set out below is what we do with information and what you can choose. In one line: the ranges and counts you set are handled inside the browser and never leave your device.

Scope of this policy

RandZen is a random number and dice generator: it draws cryptographically secure random numbers, integers and dice rolls within a range you set. In practice, it takes values from the browser's secure random source and maps them onto your range without modulo bias, so every outcome stays equally likely even when the range does not divide evenly into the generator's output. This page should be read with that tool in mind, because the limits described apply to what it computes.

In day-to-day use the tool works only from the ranges and counts you set, and it is usually opened for things like picking a winner fairly. None of that reaches us, so none of it can be stored.

Data you give the tool

This site has no backend that receives what you type. The page reads your input to compute an answer, shows it to you, and forgets it — because nothing was ever sent anywhere in the first place. The arithmetic is identical regardless of who is looking at the screen.

Storage, security and how long things last

There is nothing of yours to keep, so there is no retention period to describe for calculator input: it exists only in your browser tab and disappears when you leave. The site is served over HTTPS throughout.

Children

The site is not designed for, or marketed to, children under 13, and we do not knowingly collect their personal information.

Your privacy rights

Privacy law in some regions gives you the right to see, correct, delete or restrict the use of personal data held about you. In practice we hold almost nothing tied to you, since calculator input never reaches us, but any request you make will be taken seriously.

Changes to this policy

RandZen revises this page whenever the way it handles data changes; the "last updated" line at the top always shows the current version.

Technical data gathered automatically

Our host and any analytics we run record routine request data — the kind every web server sees, such as IP address, user agent, referrer and which pages were opened. That data serves maintenance and abuse prevention; it is never combined with the values you enter.

Cookies and advertising

We set a cookie only to remember whether you have dismissed the cookie notice. Third-party advertising partners, including Google, may use cookies or similar technologies to serve ads based on your visits to this and other sites. You can control personalized advertising in your browser settings or through Google's ad settings. Blocking cookies does not affect the tool: the calculation requires none.

Analytics and aggregate statistics

Any measurement we do is statistical rather than personal: how many people opened a page, roughly where from, and which tools get used. It is aggregated before it is read, and the values you type are never part of it.

The values you enter

Whatever you type is used to draw the answer and then forgotten, because it was never stored in the first place. Refreshing the page clears anything still on screen.

How to reach us about privacy

To ask about privacy, or to exercise a right, the contact page is the way to get through.