Last updated: August 8, 2026
InterviewPrepKit ("the site", "we") is a free, ad-free static website for interview preparation. This policy explains what data the site does and does not handle. In short: there are no accounts, we do not sell data, and your study progress never leaves your device.
Data we do not collect
- We do not ask you to create an account or provide a name, email, or password to use the site.
- We do not run advertising or third-party ad-tracking scripts.
- We do not sell, rent, or share personal information, because we do not collect it.
- We do not build a profile of what you study or track you across other websites.
Data stored on your device
The site saves a small amount of information in your browser's local storage so it can remember your choices between visits. This data stays on your device and is never transmitted to us. It includes:
- Progress — which problems and lessons you have marked as solved or read.
- Editor drafts — any notes or code you type into the on-page practice editor.
- Theme preference — whether you chose light or dark mode.
You can clear this at any time using the "Reset all" button on the Progress page, or by clearing your browser's site data. Doing so permanently removes your saved progress and drafts.
Cookies
The site does not set tracking or advertising cookies. The local-storage items described above are functional and used only to run the site's features.
Hosting and server logs
The site is hosted on Cloudflare Pages. Like all web hosts, Cloudflare automatically processes standard technical request data (such as IP address, browser type, and requested page) to deliver the site securely and to protect against abuse. This processing is performed by Cloudflare as our hosting and content-delivery provider under its own privacy terms; we do not use this data to identify individual users. On-page search runs entirely in your browser and does not send your search queries to a server.
Links to other sites
Problems link out to their original sources (for example, the original LeetCode problem). Once you follow an external link you are subject to that site's own privacy practices, which we do not control.
Children's privacy
The site is intended for a general audience preparing for technical interviews and is not directed at children under 13. We do not knowingly collect personal information from children.
Changes to this policy
We may update this policy as the site evolves. Material changes will be reflected by the "Last updated" date above.
Contact
Questions about privacy? Email [email protected].