Privacy policy

The short version

• There are no accounts and no sign-up. There is nothing to log into and nothing for you to agree to.
• There is no analytics, no advertising and no third-party script of any kind. Nothing on any page of this site is loaded from someone else's server.
• No cookies are set — not by this site, and not by anyone else through it.
• Nothing you type into a calculator is sent anywhere. The arithmetic happens in your own browser, and the page you are on is the whole program.
• The only thing stored is a small amount of your own data, on your own device, for the two things that need to remember something. That is the next section, and it is the whole list.

What is stored, on your device

Two things, both in your browser's local storage on the device you are using. Neither is ever sent to this site, and neither can be read by it.

• Your theme choice (saved under the name cozycalcs:theme:v1) — whether you picked Auto, Light or Dark in the header, so the next page you open looks the same. A few bytes, and no personal information at all.
• Your budget (saved under the name budget-app:v1) — only if you use the Budget tool: the income, expenses, categories and week start that you entered. It is written to your browser and nowhere else.

Both exist to make the site work the way you expect, not to identify you. Clearing your browsing data removes them; the Budget page also has a Delete all data button, and a Back up my data button that writes a file you keep yourself.

What the server sees

Like every website, the server that delivers these pages keeps a record of the requests made to it: which page was asked for, the date and time, and the IP address and browser that asked. That is ordinary server logging, done by whoever hosts the site, and used to keep it running and to deal with abuse — not to build a picture of anyone.

This site does not use those logs to identify you, does not combine them with anything else, and has no way to connect them to what you typed into a calculator, because that never left your browser.

Who else is involved

Nobody. There are no analytics services, no advertising networks, no social widgets or embedded videos, no comment systems, no mailing lists, no payment processors and no external fonts — the site uses the fonts already on your device, which is why it looks plain and loads quickly.

The only dealings with another company at all are the links in the footer and on the about page: Instagram and TikTok. Following one of those leaves this site and arrives at theirs, where their own privacy policy applies. Nothing about this site follows you there, and nothing of theirs is loaded here to track you before you click.

Children

This site is not aimed at children, and it collects nothing from anyone — no names, no ages, no email addresses, no accounts. There is nothing about a child's use of this site for a parent to ask about, because nothing is recorded.

Your control over your data

Because nothing ever reaches this site, there is no request to make and nothing for us to hand over, correct or delete. The data that exists is on your device, and you can remove it at any moment:

• In the Budget tool, Settings → Delete all data clears your entries; Back up my data writes a file first if you want to keep them.
• Clearing this site's data in your browser settings removes everything at once, including the saved theme. Both take effect immediately and cannot be undone.

If this ever changes

If the site ever adds something that does collect data — analytics, an email list, advertising — this page will say so in plain words before it starts, and the date below will change. Until then this page describes everything that happens: no tracking, no cookies, nothing stored but your own settings on your own device.

Last updated: 10 October 2026. Questions about any of this? The contact page has the address.