Privacy Policy

Last updated 23 October 2026

This policy covers masterysignal.com. It describes what we collect, why we hold it, and who else touches it. Questions go to support@masterysignal.com.

What we collect

Name, email and phone number — given at registration, used to issue your access key and to reach you about your account.
Your access key and its expiry — this is what logs you in.
Email verification codes — short-lived, to confirm the address is yours.
Notification subscription — if you allow browser notifications, we store the token your browser issues so we can send signal alerts. Revoking the permission ends this.
Basic usage — last login time, and which signals your dashboard has loaded.

What we never see

Your card details. Payments run entirely through Stripe. Card numbers travel from your browser to Stripe and never reach our servers. We see only that a payment succeeded, its amount, and the email attached to it.

Who processes your data

Stripe — payments, subscriptions and invoices.
Supabase — the database holding subscribers, access keys and signal history.
Vercel — hosting for this website and its API.
Resend — sending account emails, such as your access key.
Meta (Facebook) — measuring our ads, on our promotion pages only (see below).

We do not sell your data, and we never pass your name, email or phone number to advertisers.

Advertising measurement

Our promotion pages (for example masterysignal.com/ads/signal) use the Meta Pixel to measure whether our Facebook and Instagram ads work. It records page visits and steps such as opening the sign-up steps or sending the form, together with the technical details Meta collects from your browser (such as cookies, IP address and device type). It does not send the name, email, phone or account number you type into the form. Meta processes this data under its own privacy policy. You can control ad tracking in your Meta ad preferences or by blocking third-party cookies in your browser.

The same pages remember which sign-up step you reached in your own browser (local storage), so you can continue where you left off. Only the step is stored, never your details, and it is cleared once you send the form.

How long we keep it

Account records are kept while your account exists and for as long as we must retain payment records. Signal history forms part of our published performance record and is not linked to individual customers.

Your choices

See or correct your details — email us and we will send you what we hold.
Delete your account — email us. Personal details are removed; accounting records are kept in a minimal form where the law requires it.
Stop notifications — turn them off in your browser, or in the dashboard.
Stop marketing emails — every one carries an unsubscribe link. Payment and access emails continue.

Security

The site is served over HTTPS. Your access key is the credential for the dashboard, so treat it like a password — anyone holding it can see your dashboard. If yours may have leaked, email us and we will issue a new one.

Changes

Material changes update the date at the top of this page. Continuing to use the service after a change means you accept it.