Privacy policy
What we collect, why, and what we never do with it.
Last updated: 2026-04-25
What we collect
When you order, we collect: your email address, your child's full legal name, date and time of birth, city of birth, gender pronouns used in writing, and language preference. Stripe collects payment information directly; we never see or store credit card details.
What we do with it
We use birth data once — to compute the chart and generate the document. The result lives in our database (Supabase, encrypted at rest) so you can return to your interactive page and continue chatting with the AI assistant. The original birth data is retained alongside it; we cannot regenerate the document later if it's deleted.
What we never do
We do not sell your data. We do not share it with advertisers. We do not use your child's information to train models. We do not aggregate it for "insights." It exists for the one purpose: producing your document and continuing the conversation about your child.
We use your email to deliver the document, confirm your subscription if you have one, and reply to support requests. We do not run a marketing list.
Cookies and analytics
We use a small number of cookies for essential site function (Supabase Auth session, Stripe checkout). For privacy-friendly anonymous analytics we use Vercel Analytics, which does not use cookies and does not identify visitors.
Your rights
You can request a full export of your data, or full deletion, at any time. Email privacy@letterim.com and we'll handle it within 7 days.
Children's data
The document is generally purchased by a parent for a child. The child's name, date of birth, and birth city are used solely to compute the chart and write the document. We do not allow children under 13 to register or purchase directly.
Service providers
Three companies process data on our behalf: Supabase (database), Stripe (payments), Anthropic (AI generation). All three have published privacy policies you can read on their sites.
Changes
If this policy changes materially we'll email you. Otherwise minor edits are dated above.