Privacy Policy

Problems you post are permanently anonymous — your identity is never attached to them, by design, not just by policy. Your Expert profile (display name, bio, expertise) is public and visible to all visitors. We don't sell your data. We don't run ads.

When you create an account:

• Email address — used for authentication only, never shown publicly
• Password — stored as a secure hash by Supabase Auth, we never see it

Your Expert profile (public to all visitors):

• Display name, bio, expertise tags, website URL — shown publicly on your profile
• Avatar — stored in Supabase Storage, publicly accessible

When you post a problem, your account ID is stored internally to allow you to manage your post, but it is stripped from every API response before it leaves our servers. No other user, solver, or third party can link a problem back to your account. This is enforced at the code level, not just a setting.

Token transactions are recorded in a ledger tied to your account. This is used to calculate your balance and display your transaction history. It is not shared with other users.

Data is stored in Supabase (PostgreSQL), hosted in the EU region. Authentication is handled by Supabase Auth. The application is hosted on Vercel. Both providers have their own privacy and security practices — see supabase.com/privacy and vercel.com/legal/privacy-policy.

We use session cookies set by Supabase Auth to keep you logged in. No tracking or advertising cookies are used.

You can:

• Edit or delete your Expert profile at any time from the Profile page
• Delete your account at any time from the Profile page — no email required

On deletion, your account, profile, messages, and questions are permanently removed. Problems and solutions you posted are retained but fully anonymised — your identity is no longer attached to them in any way. Anonymised data of this kind falls outside the scope of GDPR (Recital 26) and may be retained indefinitely.

Questions about this policy: hello@lenjusu.com