Privacy

Last updated 17 August 2026

Short version: we keep your email and your progress so the course works. We never see your card, and we do not sell anything about you. We do use one advertising tracker — Meta Pixel — to see which adverts bring people here. In the EU and UK we ask before it loads, and you can decline.

What we collect

• Your email address — this is how you sign in. There is no password.
• Your progress — which missions you have attempted, your scores, XP, exam answers and drill results.
• Basic technical logs — requests to the server, kept so we can find faults and abuse.

What we never see

Your card details. Payment happens on Stripe's own pages. We receive only a customer reference, whether the subscription is active, and when the paid period ends. No card number, expiry or security code ever reaches us.

Why we keep it

To sign you in, to remember where you got to in a mission, to show your rank and standing, and to know whether your membership is active. That is all.

Who else handles it

• Stripe — takes payments and acts as merchant of record. They receive your email and billing address so they can charge you and handle tax.
• Our email provider — delivers your sign-in codes. They see your email address and the message.
• Meta (Facebook) — measures which adverts bring people to MissionStack. It receives that a visit, sign-up or purchase happened, and for purchases a hashed version of your email address, which is a one-way scramble Meta uses to match the sale to an advert click. It never receives your name, your progress, your scores or your card.
• Google — only if you choose "Continue with Google" to sign in. Google tells us your email address and confirms it is really yours. It learns that you signed in to MissionStack. If you use the email code instead, Google is not involved at all.

Nobody else. We do not sell your information.

Our own measurement

We count how far people get: pages viewed, buttons clicked, missions started and finished, and whether somebody subscribed. This is recorded on our own server and shared with nobody. It is how we find the places where the site is confusing.

Before you have an account this is tied to a random identifier in a cookie — not to a name, an email or an address. If you later sign up, that identifier is attached to your account so we can see the whole path. There is no third-party analytics company involved and nothing follows you to other websites.

Cookies

Three of ours, none of which follow you anywhere else: one keeps you signed in, one is the random identifier described above, and one exists for a few minutes during Google sign-in to make sure the reply came back from the same browser that started it. Clearing them signs you out.

If you accept advertising cookies, Meta also sets its own. If you are in the EU or UK we ask first and nothing from Meta loads until you say yes. Everywhere else it loads by default — you can turn it off at any time by writing to us, and declining changes nothing about how MissionStack works.

How long we keep it

While your account exists. If you ask us to delete it, we remove your account and your progress. Records of payments are kept by Stripe for as long as the law requires them to.

Your choices

Write to contact@learnmissionstack.com and ask for a copy of what we hold about you, a correction, or deletion. We will do it. If you are in the UK or EU, these are your rights under GDPR and they apply here regardless of where we are.

Children

MissionStack is professional training and is not intended for under-16s.