Privacy

Short version

There are no accounts, no sign-in, and nothing you type is sent to a server. Everything this site remembers about you lives in your own browser's local storage and never leaves it.

What we don't collect

No accounts. No email address. No payment information. No third-party advertising or tracking scripts, and no analytics service watching what you click.

What's stored in your browser

The IDE and Module page remember your progress using localStorage, entirely client-side:

• Which questions you've solved and attempted
• The code you've written for each question, so it's there when you come back
• The IDE's pane layout, and your light/dark theme choice
• Which sections you've collapsed on the Module page

None of this is sent anywhere. It's tied to your specific browser on your specific device: clearing your browser's site data for this domain, or using a different browser or device, resets it. It's also why progress doesn't yet sync across devices, there's no server-side account to sync it through.

Signup and community statistics

When you sign up, we store the email address you sign up with. We use the domain part of that address (the part after the @) to publish aggregate statistics about the community. For example, the landing page mentions the kinds of companies and institutions that learners sign up from.

• Only aggregate, organization-level information is shown. We never publish individual names or email addresses.
• Showing an organization does not mean it endorses, sponsors, or is affiliated with TrenTorch.
• Email domains are only an indication of where someone signs up from, not proof of employment or enrollment.
• We don't sell your email address or share it for advertising.

Third parties your browser talks to

To run Python in your browser, the IDE loads Pyodide from jsDelivr's public CDN. That request goes to jsDelivr, not to us, and is subject to jsDelivr's own privacy practices. Like any website, the hosting provider serving these pages processes standard web server logs (IP address, user agent, request timestamps) as a normal part of serving the site; we don't use that data for tracking or advertising.

Some Problemset exercises are framed as company-inspired scenarios for learning context only. They are not actual interview questions, do not describe a company's internal systems, and do not imply that any named company endorses or is affiliated with TrenTorch.

Cookies

This site doesn't set tracking or advertising cookies. Anything that looks like a "preference" (theme, layout) is localStorage, not a cookie.

Changes

If real accounts and server-side progress sync are ever added, this policy will be updated to describe exactly what changes and why, before that happens.

Contact

Questions about this policy: open an issue on GitHub.