What happens to the numbers you enter
Every calculation runs in your browser. Nothing you type into a calculator, plate layout or curve fit is sent to us or anyone else, unless you choose to include it in a feedback message.
What is saved on your device
The plate layout, curve-fitting and IC50 data you enter are saved in your browser's local storage, so they are still there next time. A few small settings are saved the same way, such as whether you dismissed the "install app" message. This stays on your device; we can't see it.
To remove it, use the Clear buttons on each tool, or clear this site's data in your browser settings.
The feedback form
If you use the "Send feedback" form, we receive what you type into it: the type of feedback, the tool you pick, your message, the page you sent it from and, only if you give it, your email address. If you tick "Include the numbers I entered", the values on that tool and the result shown are added to your message. Nothing else from the page is sent.
The message is passed through Cloudflare and delivered to our email inbox, which is hosted by Google. Nothing is stored on the website. We use your email address only to reply, and delete messages once we have dealt with them.
To block spam, the form uses Cloudflare Turnstile, which checks that a person rather than a bot is sending it. It loads only when you open the form, and never on the calculators themselves.
Offline use
When you visit, your browser keeps a copy of the site's pages so the calculators work without a connection. This copy contains only the site itself, never your data.
Cookies and visitor statistics
We don't use cookies or advertising. Fonts are served from our own site, so loading a page doesn't contact Google.
To see which tools are useful, we use Cloudflare Web Analytics. It counts page views and visits by page, country and browser, without cookies, local storage or fingerprinting, and doesn't follow individuals over time. We only see totals, never who you are or what you entered.
Hosting
The site is hosted by Cloudflare. Like any web host, Cloudflare processes technical information such as your IP address to deliver pages and protect the site from abuse. We don't use this to identify visitors.
Who we are and your rights
WellSpotted Labs is run by Steven Lamont, based in Scotland, UK. If you email us or send feedback, we use your email only to reply. Under UK data protection law you can ask what information we hold about you and ask us to delete it. Contact [email protected]. If you're unhappy with how we handle your data, you can complain to the Information Commissioner's Office (ico.org.uk).
Changes
If we add anything that changes this, such as a paid account, we'll update this page first.
Last updated: 8 November 2026.