Promptplay is an AI tool that enhances writing skills through offering thorough critiques of text and proposing enhancements in word selection, sentence structure, and organization. Users can effortlessly utilize the tool by copying and pasting their text and running it using a keyboard shortcut. Promptplay sees applications in various scenarios like enhancing job applications, research papers, blog posts, sales pitches, and resumes, making it a highly relied upon tool for refining written content.