Sinceerly AI Tool Launches to 'Un-AI' Writing by Injecting Human-like Errors

Sinceerly, a new Google Chrome extension, has launched with a unique twist on AI writing tools: it 'un-AI's' text by adding human-like errors and casual tones. The tool, which works on emails and other web text, offers three selectable modes: subtle, human, and CEO. The subtle mode introduces minor typos and slight awkward phrasing, while the human mode adds more noticeable errors, like missing words or informal contractions. The CEO mode goes further, injecting bold, casual language and even intentional grammatical mistakes to mimic a busy executive's tone.

Sinceerly addresses a growing concern among professionals: AI-generated text often sounds too polished, robotic, or impersonal, which can undermine trust in communications. By adding realistic imperfections, the tool aims to make emails sound more authentic and relatable. Early users report that the CEO mode is particularly effective for high-stakes emails where a direct, human touch is needed. However, some critics worry that overuse could lead to unprofessionalism. Sinceerly is free to use and available now on the Chrome Web Store.