FastPost AI - Reply in Your Voice

by Mohamad Biomy · fastpostai.xyz · Workflow & Planning

Manifest V3 in_app

View in Chrome Web Store Data as of 16 Oct 2026

Reply on X in your exact voice. FastPost learns how you write and generates replies that sound like you in seconds

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#259K

#216K among extensions

Version

1.0.2

updated 15 Jun 2026

Users

monthly, 5 months

Latest, 16 Oct 2026: 5 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About FastPost AI - Reply in Your Voice

Growing on X takes consistency. The hard part is showing up every day. FastPost AI puts an AI button inside X, next to every reply box and composer. Click it, pick a tone, and get a reply that sounds like you in seconds. The people gaining followers fast on X are the ones who reply first and post often. This makes that effortless. - Reply to any tweet in seconds in your own voice - Pick a tone: agree, push back, ask a question, be funny - Add quick instructions before generating ("keep it short", "mention I'm a founder") - Works on replies, quote tweets, and new posts - Inline — never leave X How to get started: 1. Create an account at fastpost-ai.vercel.app 2. Paste a few of your old posts. we analyze your writing style 3. Install this extension 4. Go to X, click the FastPost AI button next to any reply box, and generate fastpost-ai.vercel.app