The core interaction is deliberately minimal. Inside any textbox you type a trigger pattern, supply your prompt, and the extension returns generated text inline. That makes it useful for quick tasks like finishing a sentence in an email, drafting a comment, or rephrasing a line without leaving the page you are working on. Because it lives in the browser rather than in one specific app, it works across the sites you already use.
Apollo ai also supports custom commands. Users can tune the assistant's output to their own preferences, build reusable templates, and attach personalised instructions so the generated text matches a particular tone or format. The Chrome Web Store listing includes a video walkthrough demonstrating the slash-command workflow and template setup.
It is a small, focused tool rather than a full AI workspace: the extension itself is under two megabytes, was last updated in January 2025, and has a modest install base. The privacy disclosure states that it handles user activity data and that data is not sold to third parties or used outside the extension's core functionality. It is best viewed as a convenient inline writing helper rather than a replacement for a full-featured AI assistant.