Privacy policy

Last updated: 19 October 2026

What is stored

LeetCode Revision Buddy stores the following in its database (hosted on Supabase):

• Your email address, used to sign in and, if you opt in, to send the weekly summary.
• Your LeetCode username and your settings (problem lists, reminder time, time zone, topic weights).
• Which problems from the Blind 75, NeetCode 150 and Striver A2Z lists you have solved, and when.
• Your review schedule per topic, the ratings you give, and your daily recommended problems.

Solved problems outside those lists are ignored. Problem statements, your code and your submissions are never stored.

Access to LeetCode

The extension runs on leetcode.com. When you import your history, it reads your solved-problem list using your existing LeetCode login, inside a leetcode.com tab. It never reads or stores your LeetCode password or cookies. Afterwards, new solves are found through LeetCode's public "recent accepted submissions" for your username, and by noticing an "Accepted" result on a problem page.

Who can see it

Your data is only readable by your own account (enforced by row-level security in the database). It is not sold or shared, and there are no analytics or advertising trackers.

Email

Sign-in codes are sent by email. The weekly summary is off by default and can be turned off at any time in Settings.

Deleting your data

In Settings, "Delete my account and data" permanently deletes your account and everything listed above. Signing out only removes the session from this browser.