Leetion is a Chrome add-on designed to enhance the experience of users of LeetCode by seamlessly integrating it with Notion. This tool enables users to save problems and their solutions directly into a Notion database with minimal effort. With just one click, essential details such as problem description, solution, difficulty level, tags, and URL are extracted and stored, eliminating the need for tedious copy-pasting.

The application offers several key features, including auto-extraction of problem details, built-in spaced repetition for review scheduling, and the ability to track time and space complexity for each solution. Users can save solutions in multiple programming languages and utilize a drawing canvas for visual aids. Leetion prioritizes user privacy by ensuring no external tracking or storage of data, making it an efficient tool for interview preparation, computer science students, and competitive programmers.