AI growth & promotion for X and Threads
Replyburst finds the conversations where people are asking for exactly what you sell, writes a reply in your voice with your link, and posts it. Grow an audience on one side, market your products on the other.
Trusted by indie hackers and founders growing on X and Threads
Add products, describe a campaign, approve a post — Replyburst handles the replies.
Name, link, what it does, who it's for. Paste a URL and AI fills most of it in — you just check the details.
Tell it what to look for in plain language — "drop your product below", "what are you building". The AI wizard asks a couple of clarifying questions, then builds the campaign.
Replyburst finds X posts that match your intent. You review one and approve it with a single click — nothing goes out without your say-so.
For every relevant commenter, Replyburst replies individually with a personalized pitch for whichever of your products actually fits them — with their link, on a human-paced schedule.
Available now on the Chrome Web Store.
Add a product, describe a campaign, and Replyburst finds the right people and pitches them individually — here's what each step actually looks like.
Paste a link — AI fills in the rest.
New product
Your products
Plain language in, a ready campaign out.
Describe your campaign
promote my study app to students posting about exams
Should replies mention your discount code?
Matches get a personal pitch, on their own schedule.
drop your product below 👇 what are you building?
been building Notely — lecture recordings into notes 🎙️
working on RankTrack, tracking keyword rankings for my blog
love this thread, following for inspo 👀
been building Notely — lecture recordings into notes 🎙️
working on RankTrack, tracking keyword rankings for my blog
love this thread, following for inspo 👀
been building Notely — lecture recordings into notes 🎙️
Notely sounds great for lecture notes — Notiq handles that same kind of capture & search, might be handy: notiq.app
Notiq handles that same kind of capture & search — notiq.app
RankTrack + SEOBeast could pair well for tracking fixes — seobeast.app
No dashboards to babysit. Tell Replyburst who you are, and it scans your niche, picks the conversations worth joining, and replies in your voice — automatically.
Your voice & targets
Everyone obsesses over posting. Nobody talks about how much reply game actually moves the needle.
How do founders keep up replying to dozens of posts a day without it becoming a full-time job?
10 productivity hacks you won't believe (a thread) 🧵
How do founders keep up replying to dozens of posts a day without it becoming a full-time job?
Honestly it doesn't — I stopped doing it manually. Replyburst scans my niche and drafts every reply.
Runs entirely from your own browser on a randomised, human-like schedule — you just skim the log.
Find the right posts, pitch the right product, reply at a pace that looks human — because it is, just automated.
Add your products, describe a campaign in plain language, and Replyburst finds the X posts where people want something like yours. Approve one; it replies to every relevant commenter with a personalized pitch and your link.
AI drafts replies to relevant posts in your niche, pre-generated in batches. Flip through the deck and approve with the arrow keys.
Turn it on and Replyburst replies in your voice and your niche without you opening the queue.
Irregular 4–18 minute gaps between replies, occasional longer pauses, a shared daily budget per account, and a cap on replies per post. Never the same commenter twice within 30 days.
Replyburst runs as a Chrome extension inside your already-logged-in tab. No password, no cookies handed over, low ban risk.
Every reply and post is logged with timestamp, target post, and generated text. Audit everything, pause anything instantly.
One extension, three jobs: it finds the right conversations, replies like you would, and posts your own ideas — all while quietly putting your name out there.
Nobody talks about how much reply game matters. Most founders only post originals, then wonder why nobody ever sees them.
So true — reply velocity is underrated. That's actually exactly why I built Replyburst — it drafts replies in your voice and fires them off automatically.
Scans your target accounts and joins the conversations that matter.
Reply > new followers. Consistency > virality.
Reply > new followers. Consistency > virality. Let Replyburst handle the boring part.
Posts from your own browser, on a randomised, human-like schedule.
How do people even keep up replying to dozens of posts a day without it becoming a full-time job?
Honestly it doesn't — I stopped doing it manually months ago. Replyburst scans my niche, drafts the replies, and I just skim the log at the end of the day.
Every 5th–8th reply naturally name-drops your product — never spammy, always in context.
Real conversations become real distribution — for free.
Real founders turning X from a time-sink into their #1 distribution channel.
Three of my first ten customers came straight from Replyburst replies. It found the exact posts where people were asking for what I sell.
I was nervous the replies would sound like a bot. It nailed my voice on the first try — people reply back like it's me.
Best part isn't even the replies — it's that I show up every single day without opening X. 60-day streak and counting.
My impressions went +340% in a month. Replies under big accounts put me in front of their whole audience.
I run it for five client accounts from one dashboard. Zero ban risk because it posts from the real browser session, not some bot farm.
Tried four growth tools before this. Cancelled all of them. This is the one.
Start free, upgrade when you need more. No hidden fees, cancel any time.
Every plan runs on the same protective pacing: automated replies are capped at ~15/hour and spaced 4–18 minutes apart, with occasional longer pauses. That's deliberate, not a limitation — it's what keeps the account safe. Accounts with X Premium can typically sustain more.
≈2 replies/day
50 replies/month included — the pool that number is drawn from. Actual daily pace will vary.
Forever free, no card needed
Comfortable for trying automated replies without ever touching a limit.
≈30 replies/day
1,000 replies/month included — the pool that number is drawn from. Actual daily pace will vary.
Enough room to run every day — you'll rarely brush against the pacing cap.
≈130 replies/day
4,000 replies/month included — the pool that number is drawn from. Actual daily pace will vary.
Built to run several accounts near the pacing ceiling, safely, all month long.
Get the full Agency plan — 5 accounts, 4 runs/day, threads, all features — with a single one-time payment. No subscription, ever.
Monthly plans renew automatically and can be cancelled any time.
Honest answers about how Replyburst works.