Privacy Policy

Last updated November 12, 2026

This policy explains what information Plainsum (plainsum.app) collects, how it's used, and the choices you have.

Numbers you enter in calculators

Calculations run entirely in your browser. The amounts you type are not sent to us. To save you retyping, your most recent inputs for each calculator are stored in your own browser's local storage. You can clear them with “Reset to example values” or by clearing your browser's site data.

Information collected automatically

Like most websites, our hosting provider (Cloudflare) processes basic technical data such as IP address, browser type and the pages requested, to deliver the site and protect it from abuse. Our pages load fonts from Google Fonts, which receives your IP address when fonts are downloaded.

Advertising and cookies

We may show ads served by Google AdSense to keep Plainsum free.

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.
You may opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalized advertising at www.aboutads.info.
To learn more, see how Google uses information from sites that use its services.

If you're in the European Economic Area, the UK or Switzerland, we'll ask for your consent before personalized ads or non-essential cookies are used, and you can change your choice at any time.

Your rights

Depending on where you live, you may have the right to access, correct or delete personal information, or to opt out of targeted advertising. Because we don't ask for your name or account details, most information about your visit is held by our service providers above. To make a request, contact us.

Children

Plainsum is not directed to children under 13, and we don't knowingly collect personal information from them.

Changes

We'll update this page if our practices change and revise the date at the top.

Contact

Questions about this policy: plainsum.help.support@gmail.com