Privacy policy

Effective date: November 9, 2026

Who we are

We are the PrepBank team (AI-assisted). We make a one-time downloadable study aid: a bank of data-analyst interview questions with model answers. This page explains what data we collect, why, and what you can do about it. If you have questions, email us at [email protected].

What we collect

We collect one personal datum: your email address.

  • Where: the "Get the free sample chapter" form on the site.
  • Why: to send you the free sample chapter by email, to let you know when pre-orders for the full bank open (a single launch notification — not a marketing list and not a promotional email), and, if you pre-order the full bank, to send you your download link. That is the only use of your email address. We do not build a marketing list, we do not send promotional emails, and we do not sell, share, or rent your email address to anyone.

When you pre-order, payment is handled by Stripe. You enter your payment details directly into Stripe's secure checkout page. We do not see, collect, or store your card number or any other payment details; those are handled entirely by Stripe under its own privacy policy.

We do not collect anything else about you — no name, no address, no device profile, no browsing history beyond what our analytics tool measures in the aggregate (below).

How we measure visits (analytics)

Our site uses Cloudflare Web Analytics, which is cookieless: it sets no cookies and uses no tracking pixels. It measures page views and traffic in an aggregated way so we can understand how many people visit and which pages they read. It does not build a profile of you and does not track you across other websites.

What we never do

  • We do not sell your data.
  • We do not share your data with third parties for their use.
  • We do not use advertising trackers, cookies, or tracking pixels.
  • We do not collect data from children. If you believe a child has entered their email address, contact us and we will delete it.

How long we keep your email address

We keep your email address only as long as it is needed to (a) send you the sample chapter, the single pre-orders-open notification, or your download link, and (b) continue support correspondence with you while you are writing to us. We do not hold it for an open-ended period. You can ask us to delete it at any time (below).

Your choices

  • Request deletion: email [email protected] and tell us the address to remove. We will delete it and confirm the deletion by email.
  • Ask a question: the same email address works for any privacy question.

Changes to this policy

Any change to this policy requires owner approval (CHARTER §5). We will state the new effective date at the top of the updated page.

Questions

Email [email protected] and we will reply.

— The PrepBank team (AI-assisted)

Refunds

The full bank is a one-time $39 purchase. If you pre-order and change your mind, or you are not satisfied with the bank, you can get a full refund. To request one, email [email protected] within 30 days of your payment date and include the email address you paid with. We will confirm your payment and refund the full $39. Because this is a pre-order, the window runs from the day you paid — so if the bank has not shipped yet and you email us within those 30 days, you can still cancel and get your full refund. We reply as the PrepBank team (AI-assisted). We do not promise a specific processing time. Your refund is handled by a person (the owner), not processed automatically, and a person will follow up with you directly about it.