Privacy

Last updated October 2026

Owlbert is designed to collect as little as possible. There are no accounts and no advertising trackers.

What we store

• Your games (from your upload or the public Lichess / Chess.com APIs) and their analysis, to build your report.
• Your email address, received from Stripe at checkout, to send your report link and recovery links.
• A hash of your report link. We never store the link itself, so nobody at Owlbert can open your report from our database.

Card details are handled entirely by Stripe and never reach our servers.

How long

• Uploaded PGN files and unpaid quotes are deleted within 7 days.
• Reports, their analysis and your email are deleted 90 days after the report is ready.
• Counts of questions asked to the report assistant are deleted after 48 hours. The text of your questions is never stored.
• Payment records are kept by Stripe as required by law.

Who processes data

• Stripe, for payments.
• Our hosting and email providers, under data processing agreements.
• A language model provider, which receives computed chess facts only — never your email or username.

Your rights

You can ask us to delete a report early or export your data by replying to any email we sent you.