ReviewLabs is a free, solo-built project — there's no company behind it, just Satyabrata Mohanty. This page explains, plainly, what data the site touches.
Last updated: July 16, 2026
You can browse challenges, attempt them, and see explanations without ever signing in. Your progress in that case is stored only in your own browser’s local storage — it never reaches our servers and we never see it.
Signing in is optional and only exists so your progress can follow you across devices. When you sign in, GitHub shares your public profile (username, avatar, and the email associated with your GitHub account) with our authentication provider, Supabase. We never see or store your GitHub password — GitHub handles that step entirely.
We store a profile record and your challenge attempt history (which challenges you’ve completed and whether you got them right) tied to your account, so it can sync back to you on any device you sign in from.
The only cookies ReviewLabs sets today are functional ones from Supabase Auth, used to keep you signed in. There are no advertising or tracking cookies. If that changes — for example, if we add basic visit analytics later — this page will be updated first.
Three services run the site under the hood: Supabase (database and authentication), GitHub (identity provider for sign-in), and Vercel (hosting, which logs standard web request metadata like IP address for security purposes). None of your data is sold, and none is shared with advertisers or any other third party.
ReviewLabs is free forever. We don’t collect or process any payment information, because there’s nothing to pay for.
You can sign out at any time. To request that your account and attempt history be deleted, email satyatechgeek@gmail.com — since this is a one-person project, requests are handled manually, but promptly.
ReviewLabs isn’t directed at children under 13. If you believe a child has created an account, contact us and we’ll remove it.
This is a small, evolving project — as real features (like site analytics or a live leaderboard) actually ship, this page will be updated to match, not before. The date at the top always reflects the current version.
Questions? Visit the Contact page.