Le Codex
Sub-processors
Last reviewed: 1 October 2026. We tell users about changes to this list before a new sub-processor handles their data.
These documents have not yet been reviewed by a lawyer.
| Company | What it does for us | Where the data is | Personal data involved |
|---|---|---|---|
| Supabase | Database and sign-in | Frankfurt, Germany (EU) | All account and learning data |
| Railway | Runs our application servers | Netherlands (European Union) | Data passing through the app; short-lived server logs |
| Resend | Sends service emails (sign-in, consent, notices) | Sends from Ireland (EU); stores email metadata and logs in the United States | Recipient email, message content, delivery status |
| Optional "Continue with Google" sign-in, only if you choose it | Global | Sign-in identity | |
| Microsoft | Optional "Continue with Microsoft" sign-in (Microsoft Entra ID), only if you choose it | United States | Your email address and your Microsoft account id |
| Discord | Optional "Continue with Discord" sign-in, only if you choose it | United States | Your email address and your Discord account id |
| Paddle (not yet active) | Will sell paid plans as merchant of record, once they exist | To be confirmed when active | Purchaser's billing details (never stored by us) |
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