Free
Free
Forever free, no card needed
- 1 X account
- 1 run per day
- 5 replies per run
- 1 original post per run
- Thread posting
- Analytics & post reports
- Full activity log
- OpenAI & Anthropic support
- Priority support
Autopilot X growth · powered by AI
Grow on X
while you sleep.
Connect your account, set your voice, and Replyburst posts originals and replies to the right conversations — every day, on a human-like schedule.
no credit card · free forever plan
Trusted by builders growing on X
- Marcus Webb@marcuswebb_dev
- Priya Nair@priya_builds
- Tobias Krüger@tobi_ship
- Leila Rahmani@leilarahmani
- Carlos Vega@carlosvega_io
- Marcus Webb@marcuswebb_dev
- Priya Nair@priya_builds
- Tobias Krüger@tobi_ship
- Leila Rahmani@leilarahmani
- Carlos Vega@carlosvega_io
12,000+
replies posted
98%
uptime
OpenAI & Anthropic
AI providers
How Replyburst works
Set up once, grow every day. Here's the three-step process.
Add the extension, sign in
Install the Replyburst extension and open X. It auto-detects your logged-in tab and connects your account in one click — no password, no cookies to copy, no developer app approval.
Set your voice
Define your niche, communication tone, topics you care about, and the accounts you want to engage with. Replyburst uses this context to write replies and posts that actually sound like you.
It posts & replies daily
Every day, Replyburst scans your target accounts, picks the best conversations to join, and fires off replies and original posts on a randomised, human-like schedule — no robotic bursts.
Everything you need to grow
A complete autonomous engagement engine — from content generation to scheduling and logging.
Autonomous replies
Replyburst monitors your target accounts and drops contextual, on-brand replies automatically — no queue to approve, no manual work.
Posts in your voice
Original tweets and threads crafted from your niche, tone guidelines, and preferred topics. Sounds like you, not a bot.
Human-like scheduling
Randomised posting windows with natural delays between actions. No suspicious clockwork bursts that trigger X rate limits.
Provider-agnostic AI
Use OpenAI (GPT-4o) or Anthropic (Claude) — switch any time. Bring your own API keys and keep full control of costs.
Full activity log
Every reply and post is logged with timestamp, target post, and generated text. Audit everything, pause anything instantly.
Multi-account support
Agency plan supports up to 5 X accounts from a single dashboard. Manage clients or personal brands without context switching.
Live in your browser
Your account, on autopilot
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.
1
Finds relevant posts
scanning #buildinpublic…
@growthhacker_dan4m
Nobody talks about how much reply game matters. Most founders only post originals, then wonder why nobody ever sees them.
6221
@you Autonow
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.
2
Writes & posts originals
@you
Reply > new followers. Consistency > virality.
human-like schedule · 2:14pm Posted
@you Autonow
Reply > new followers. Consistency > virality. Let Replyburst handle the boring part.
4317
Posts from your own browser, on a randomised, human-like schedule.
3
Promotes you, organically
@indie_marie9m
How do people even keep up replying to dozens of posts a day without it becoming a full-time job?
@you Auto
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.
Simple, transparent pricing
Start free, upgrade when you need more. No hidden fees, cancel any time.
Most popular
Pro
$9/mo
- 1 X account
- 2 runs per day
- 20 replies per run
- 2 original posts per run
- Thread posting
- Analytics & post reports
- Full activity log
- OpenAI & Anthropic support
- Priority support
Agency
$39/mo
- 5 X accounts
- 4 runs per day
- 20 replies per run
- 3 original posts per run
- Thread posting
- Analytics & post reports
- Full activity log
- OpenAI & Anthropic support
- Priority support
Limited lifetime deal · 50 spots only
Pay once, own it forever
Get the full Agency plan — 5 accounts, 4 runs/day, threads, all features — with a single one-time payment. No subscription, ever.
50 of 50 spots left0/50 claimed
$249one-time
Secure your spotMonthly plans renew automatically and can be cancelled any time.
Frequently asked questions
Honest answers about how Replyburst works.
- Do I need a Twitter/X developer account or my password?
- No. You install the Replyburst browser extension and open X — it auto-detects your already-logged-in tab and connects in one click. No password, no cookies to copy, no API access, no developer app, no approval process. It acts through your own browser session, which keeps ban risk low.
- Is this against X's Terms of Service?
- Automated engagement tools occupy a grey area in X's ToS. Replyburst mimics natural usage patterns — random delays, human-paced posting, and no spammy behaviour — to minimise risk. That said, you are solely responsible for how you use the tool on your account. We recommend reviewing X's automation policies and using it responsibly: no unsolicited DMs, no mass-following, and no content that violates community standards.
- How does the AI sound like me?
- When you set up your account, you write a voice profile: your niche, your typical tone (casual, authoritative, witty), topics you care about, and phrases or structures you tend to use. Replyburst feeds this context to the AI on every generation call. The more specific your profile, the better the output. You can update your voice settings any time from the dashboard.
- What AI providers are supported?
- Replyburst supports OpenAI (GPT-4o) and Anthropic (Claude). You provide your own API key in the settings — Replyburst never charges you for AI tokens, only for the subscription plan. You can switch providers at any time without losing your configuration.
- Can I run multiple X accounts?
- Yes — the Agency plan supports up to 5 connected X accounts from a single Replyburst login. Each account has its own voice profile, target list, run schedule, and activity log. The Free and Pro plans support 1 account each.
- How do I cancel?
- You can cancel your subscription at any time from your account settings — no cancellation fee, no waiting period. Your account reverts to the Free plan at the end of the current billing period and you keep access to your activity history.