Privacy Policy

In short

Praxi is a system design training product. To make it work, we keep your account details and your learning progress. We run no analytics, no trackers, and no ads — nothing on this page phones home to a third party. We don't sell your data.

Cookies

We use one functional cookie: a session cookie that keeps you signed in (Auth.js stores a signed, http-only session token). That's it. There are no analytics cookies, no tracking cookies, and no advertising cookies, because there's nothing on the site that needs them.

What we collect

• Account information. When you sign up, you give us an email address and a name (or it comes from your Google account if you sign in with Google). If you use email and password sign-in, your password is stored only as a one-way salted hash — we can't read it.
• Learning progress. Lessons you've completed, quiz attempts and scores, and designs you've saved in the Design Lab. This is the point of the product: it's what lets you pick up where you left off.

Where it lives

Your data is stored in our hosted Postgres database, operated by our database provider on our behalf. We use industry-standard encryption in transit.

What we don't do

• No analytics or tracking. We don't use analytics tools, trackers, or ad pixels. We don't profile you or follow you around the web.
• No selling. We don't sell your personal information to anyone, ever.
• No ads. There are no advertisers on Praxi, so nobody is buying access to you.
• No surprise sharing. We share your data only with the service providers needed to run the product (hosting, database, sign-in), and only as needed for them to do their job.

Your choices

You can ask us to export or delete your account and its data at any time by writing to support@praxi.lol. Deleting your account removes your progress too — there's no undo.

Changes

If this policy changes in a meaningful way, we'll update the date at the top of this page. Because this is a beta product, features — and the data they need — can change; we'll keep this page honest about what's actually true.

Contact

Questions about privacy? Write to support@praxi.lol.