Privacy policy.

When you enter your email in a newsletter, free PDF, product download or “tell me when it ships” form, the address is saved to the site’s email list, in a database hosted by Supabase. It is there for the weekly email and for news of the thing you asked about.

Nothing has been sent to the list yet. When the email starts, every message will carry an unsubscribe link. Google Analytics is told that a sign-up happened and which form it came from, never the address itself.

Every calculator works out its result in the page. What you type is not sent to the site’s database. The inputs are written into the page address so a result can be bookmarked or shared, so anyone you send that link to sees the same values.

A few calculators (TDEE, GKI, caffeine, peptide and sleep efficiency) remember your last inputs in this browser’s local storage, so they are filled in next time. Clearing the site’s data removes them.

One exception you choose: if you enter a guess on the Biological Age calculator, your guess, your result and your age are added to the shared tally that page shows, with no name, email or account attached.

Your vote, or the number you submit to an “Am I Normal?” page (with the age band and sex if you pick them), is saved with a random code your browser makes up, which is only used to discourage repeat votes. Results are only ever shown as totals. Your browser also remembers that you voted, so the page can show you the results.

What you type into the search box may be saved, lower-cased and cut to 80 characters, with the page you picked from the results, so the search can be improved. Anything that looks like an email address or a phone number is not saved, and no code or account is attached to a search.

Results you save stay in this browser’s local storage until you sign in. Signing in to sync (with an emailed link or with Google) creates an account held by Supabase: your email address and, if you use Google, the name and picture Google shares. Your saved readings (which tool, the value, its unit and label, and when you saved it) are then kept in that account, and only you can read them. The sign-in email is sent by Supabase, and the “Continue with Google” button is loaded from Google on that page only.

Signing out clears the copy in that browser; the copy in your account stays until you ask for it to be deleted (see below). The “Also send me the weekly research drop” box starts unticked: your address joins the email list only if you tick it.

Google Analytics 4 loads on most pages, without cookies: nothing is stored on your device. The identifier it uses lives only in the open page, so each visit is counted on its own and a return visit is not linked to an earlier one. Google signals and ad personalization are turned off. It records the pages you view, roughly where you are (worked out from your IP address), your device and browser, and the page that sent you here. It also notes scrolling, file downloads and clicks on links that leave the site. The site sends it a few events of its own: that a calculator produced a result (which tool, never the values), that someone signed up (which form, never the address), and clicks to an app store.

Page addresses are trimmed before they are sent, so calculator inputs in the address never reach Google; only campaign tags (utm_) and ad-click IDs are kept. Analytics does not load on the Mira pages, the Solyd privacy and account-deletion pages, or the extension privacy page.

To turn it off in your browser, open any page with ?notrack=1 at the end of the address (for example aayushnitya.com/?notrack=1). The browser remembers the choice; ?notrack=0 turns it back on. A content blocker, or Google’s own opt-out browser add-on, works too.

Besides the items above, local storage holds your light or dark theme, your preferred units, the last few pages you opened from search, and your analytics opt-out. These are not cookies and are never sent anywhere. Clearing this site’s data in your browser removes all of them. The cholesterol, blood sugar, insulin and blood pressure numbers you type into a calculator during a visit are kept in this tab’s session storage, so the next calculator can offer them, and so is the age band and sex you pick on an “Am I Normal?” poll, so the next poll can use them. Both are cleared when you close the tab, and this copy is never sent anywhere.

Like most websites, the server keeps a standard log of page requests (your IP address, the page address, which for a shared result link includes its inputs, and your browser type). It is used to run and secure the site and is not shared. Fonts are served from this site, not from a third party.