Scores the posts in front of you
On your feed, a search or a profile. Every post gets "reply now" or "skip", with one line of why.
Chrome extension for X · Waitlist open
Reply where the views are
OutgrowX shows you which posts are worth your reply, and keeps score of what your replies earn.
It's a Chrome extension. You still write every reply yourself.
Waitlist members hear first when it opens. Then $19/month after a 7-day free trial.
Made by @asaridarr. 125 → 1,959 followers in 7 weeks (5 Sep to 24 Oct 2026), almost all from replies sent by hand.
How it works
Open X like you always do. OutgrowX sits on top and does the maths.
Expected reach before you reply
A likely view range for your reply, from rules measured on real replies. A reply gets about 0.5 to 2.8% of the post's views, and posts with 12 to 60 replies work best.
A tally of what every reply earned
Views, whether the author replied back, and followers gained per 100 replies. It fills itself in as you browse.
A pace guard
A gentle warning if you reply faster than about one a minute, or at a steady rhythm. Stay human.
What it never does
Your replies, written by you. OutgrowX just shows you where.
- Never writes your replies. No AI, ever.
- Never posts, replies, likes, follows or DMs for you.
- Never scrolls or loads pages by itself.
- Never sends other people's posts to a server.
How to grow on X with replies
The routine that took me from 125 to 1,959 followers in 7 weeks, measured on my own replies. You can do all of it by hand. OutgrowX just does the checking.
Who to reply to on X
- Posts with 12 to 60 replies. That is the sweet spot.
- Past about 85 replies, reach collapses. Skip those.
- A reply gets about 0.5 to 2.8% of the post's views. On a 20K-view post, that is 100 to 560 views.
- Skip polls and posts under about 20 views.
- For new follows: accounts that follow more people than follow them, where neither of you follows the other.
How to reply like a person
- Write every reply fresh. No templates, no AI.
- Never faster than about one a minute, and never at a steady rhythm.
- Spread out. Don't keep replying to the same account on the same day.
Keep score
- Log every reply and what it earned: views, and whether the author replied back.
- Track followers gained per 100 replies, week by week.
- Note the accounts that never reply back, and spend your replies elsewhere.
Why I'm building it
I grew @asaridarr from 125 to 1,959 followers in 7 weeks, almost all of it from replies.
Every day I worked out which posts were worth a reply, then logged what each one earned. A few rules kept showing up: a reply gets about 0.5 to 2.8% of the post's views, posts with 12 to 60 replies work best, past about 85 replies nobody scrolls down to you, and posts under about 20 views are invisible.
OutgrowX does that checking and logging for you, right on X. You still write every reply.
Ahmad, @asaridarr
Pricing
Pro, with a 7-day free trial. Waitlist members hear first when it opens.
Pro
$19/month
or $120/year ($10/month, 47% off)
7-day free trial. Card needed to start it.
- Unlimited scoring
- Expected reach on every post
- The full tally: views, reply-backs, followers per 100 replies
- Connect mode: accounts that follow more people than follow them
- Pace guard
FAQ
How do I grow on X?
Reply every day to posts that still have room for you: 12 to 60 replies, and enough views that 0.5 to 2.8% of them is worth it. Write every reply yourself and never rush. That routine took @asaridarr from 125 to 1,959 followers between 5 Sep and 24 Oct 2026.
Who should I reply to on X?
Posts with 12 to 60 replies, and accounts that follow more people than follow them. Skip polls, posts past about 85 replies and posts under about 20 views. OutgrowX marks these for you on the page you have open.
Does it write replies for me?
No. There's no AI writing in OutgrowX. It shows you where to reply, and you write every reply yourself.
Does it post, like or follow for me?
Never. It doesn't post, reply, like, follow or DM, and it never scrolls or loads pages by itself. It only reads the X page you already have open.
Can it get my account in trouble?
No tool can promise that. OutgrowX is built to stay out of X's way: it never acts for you, and the pace guard warns you when you reply faster than about one a minute or at a steady rhythm, which is how bots reply.
Does it use the X API?
No. It reads what X has already loaded on your screen, so there's no cost per post and no daily search limit.
Where does my data go?
Your tally stays in your browser. Other people's posts are never sent to a server.
When can I use it?
The plan is to build it in November if enough people join. Everyone on the waitlist gets it first.
Is there a free plan?
No. Pro starts with a 7-day free trial, and you add a card to start it. Cancel before the trial ends and you pay nothing. Pro is $19/month or $120/year.
Which browsers?
Chrome on desktop. There is no mobile app.
Your next follower is in someone else's replies.
OutgrowX shows you which ones. Join the waitlist.
I'll only email you about OutgrowX.