replyfast - Generate X replies in one click

Generate three reply drafts in one click. Friendly, Professional, Humorous — you review, you post.

Stop staring at the reply box. Replyfast generates three distinct reply drafts for any X tweet in one click — Friendly, Professional, or Humorous — right inside your browser. No switching tabs, no copy-pasting to ChatGPT. How it works: Open any tweet detail page on X Click the Replyfast rail button Pick your tone and hit Generate Choose the best draft and paste it into your reply What makes Replyfast different: • Three clear tones so you pick the voice that fits the moment • Profile-based generation — tell it your niches and positioning, and drafts sound like you, not generic AI • Side panel stays out of your way until you need it • You review every draft before posting — Replyfast never hits send Privacy first: • Your tweets and drafts are never stored on our servers • Generated replies stay in your browser only • Sign in with Google — no passwords to manage Free to start: Sign up and get 20 credits immediately. Each generation costs 1 credit, and you can purchase more anytime. English only. Optimized for X creators, builders, and anyone who wants to reply faster without sounding like a bot.