Last updated: September 2026. This page explains what happens to data when you use this site. The short version: the tools themselves store nothing, and the advertising on the site works the way advertising works everywhere else.
Nothing. Every tool on this site runs entirely in your browser. Text you type — a name in the compatibility calculator, your options in the decision maker — never leaves your device, is never transmitted to a server, and is never stored by us. There is no user account system and no database of visitor input.
We use privacy-respecting analytics to understand aggregate patterns: how many people visit, which tools are used most, and which pages people arrive on. This data is aggregated and is not used to identify individual visitors.
This site is supported by advertising. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this and 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.
You may opt out of personalised advertising by visiting Google's Ads Settings at adssettings.google.com. You can also opt out of a third-party vendor's use of cookies for personalised advertising by visiting aboutads.info. Opting out does not remove ads — it means the ads you see are less relevant to you.
If you are in the European Economic Area, the United Kingdom or Switzerland, you will be shown a consent message before personalised advertising cookies are used, and you can change or withdraw your choice at any time using the privacy settings link in the site footer.
You can block or delete cookies in your browser settings at any time. Doing so has no effect on your ability to use any tool on this site, because none of them need cookies to work.
This site is not directed at children under 13 and we do not knowingly collect any information from them.
This site links to third-party websites. We are not responsible for the privacy practices or content of those sites, and we encourage you to read their policies.
If this policy changes, the updated version will be posted on this page with a new date at the top.
Questions about this policy can be sent to us via the contact page.