Leettuce is a free Chrome add-on designed to enhance your LeetCode experience by color-coding problems based on their solving recency. This tool allows users to easily identify which problems they have recently tackled and which ones might need revisiting, effectively improving their problem-solving strategy. By using a color-coded system, Leettuce visually indicates how 'fresh' or 'rotten' each problem is, helping users to prioritize their practice sessions.

This add-on falls under the category of browser tools and is specifically tailored for LeetCode users. With its straightforward functionality, Leettuce aims to streamline the coding practice process, making it easier for users to keep track of their progress and focus on areas that require more attention. Overall, it serves as a practical enhancement for those looking to optimize their coding practice.