Cookie Policy
Last reviewed
Calcrivo sets no cookies of its own. The storage it uses for your preferences stays in your browser, and the cookies that do get set come from Google Analytics and Google AdSense. This page explains both, and how to refuse them.
What we store ourselves, and where
Your preferences are kept in your browser’s localStorage, not in a cookie. The practical difference matters: localStorage is never attached to a network request, so these values are not transmitted to us or to anyone else even incidentally. They are readable only by pages on this domain, in your browser, on your device.
| What | Why |
|---|---|
| Theme choice | Keeps light/dark mode across visits, and is read before first paint so the page does not flash the wrong theme. |
| Recently used and favourited calculators | Powers the “recents” list and your favourites, so you can get back to a tool you used. |
| Display preferences | Currency, unit system and similar choices, so they are not reset on every visit. |
| Local usage counts | Feeds the private usage summary, which is computed in your browser from your own activity and is not sent to us. |
None of this is required for the calculators to work. Clearing site data for this domain removes all of it and the site returns to its defaults.
Google Analytics cookies
We use Google Analytics 4 to see which pages are used and which are broken or slow. It sets its own first-party cookies to distinguish one browser from another across a session and to throttle request rates. It records page views, approximate location derived from IP address, device and browser type, and referring site. It does not receive anything you type into a calculator.
You can stop it collecting anything by installing Google’s Analytics opt-out browser add-on, or by blocking the script with any content blocker. The calculators are unaffected either way — nothing on this site is gated behind analytics loading.
Google AdSense and advertising cookies
This site shows ads through Google AdSense. Google and its partner vendors set cookies to serve and measure advertising. Specifically, and as Google requires publishers to disclose:
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
- Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
- These cookies are also used for frequency capping, to measure whether an ad led to anything, and for the fraud and invalid-traffic checks Google runs on its own ad serving.
We do not set these cookies, cannot read them, and do not receive the advertising profile they support.
How to refuse or limit advertising cookies
- Turn off personalised advertising from Google at Google Ads Settings.
- Opt out of personalised advertising from many participating vendors at www.aboutads.info.
- Block third-party cookies in your browser settings, or use a content blocker. Every calculator on the site keeps working with ads blocked.
Opting out does not remove advertising; it makes it non-personalised, which generally means less relevant ads rather than fewer.
Consent in the EEA, the UK and Switzerland
If you are in the European Economic Area, the United Kingdom or Switzerland, consent rules apply to advertising and analytics cookies. For visitors in those regions Calcrivo uses Google’s own consent management platform, which Google certifies under the IAB Transparency & Consent Framework and delivers through AdSense. It asks for your choice before personalised advertising is used.
Until you make a choice, this site tells Google’s tags to treat advertising storage, ad personalisation, ad user data and analytics storage as denied (Google Consent Mode, set before any Google script runs). If you refuse, ads may still appear, but they are non-personalised and Google Analytics does not set its cookies.
You can change or withdraw your choice at any time with the Privacy settings link in the footer of every page. Outside these regions there is no consent dialog; the opt-out controls listed above are the means available to you.
Do Not Track
Browsers that send a Do Not Track header do not receive a different response from this site, because the header has no agreed meaning and we do not want to imply a protection we are not providing. The opt-outs above are the ones that have an effect.
Changes
If the set of third parties on the site changes, this page and the Privacy Policy change with it, and the “last reviewed” date records when the text was last revisited.