Ready to ship?

Most vibe-coded apps aren't.
We fix the bugs you can't fix — and find the ones you don't even know exist.

Free during beta · No credit card required

Your code is safe with us. We sign an NDA on request · Never shared with third parties · Handled confidentially

The real problem

Bugs don't disappear.
They hide.

You can see the bugs AI flag. But the ones that break your users' trust are the ones nobody told you about.

WHAT YOU KNOW ABOUT The bug you reported Login broken you can see it UI glitch AI flagged it WHAT'S ACTUALLY THERE Duplicate signup no DB check Payment hangs async without await Session data lost after timeout API endpoint exposed no auth check + more you haven't found
WHAT YOU KNOW ABOUT The bug you reported Login broken you can see it UI glitch AI flagged it WHAT'S ACTUALLY THERE Duplicate account signup no DB check Payment hangs on mobile async without await API endpoint exposed no auth check Session data lost after timeout + more you haven't found
What you knowWhat's actually there
Login brokenUI glitch

AI fixes what it can see — nothing more.
The edge cases, the security gaps, the buried bugs?
That's what Kybr is for.

Solutions

4 features.
Every stage covered.

From finding bugs to fixing them — and preventing the next one from ever shipping.

Feature 01

Bug fixer

We review and fix your code directly, then deliver the corrected code back to you. No more going in circles — we find the root cause and fix it in one go.

checkout.js — diff view - const handleSubmit = () => { - processPayment(data); + const handleSubmit = async () => { + await processPayment(data); Root cause: missing await on async call

Feature 02

Vibe-coding buddy

We suggest prompts that prevent bugs and debugging issues from occurring in the first place. Better prompts = resilient code from the very first message.

Kybr-optimized prompt Email must be unique (DB level) Return explicit errors, not silent Session tokens expire after 24h ✓ Kybr-optimized prompt

Feature 03

Bug guardian

Catch edge cases, broken flows, and silent failures — without needing a QA team. We dig through your code and surface the bugs hiding below the waterline.

function addUser(email) { db.insert({email}) ← no check ! sendWelcome(email) return true ← missing await ! } 2 bugs found

Feature 04

Vibe shield scan

We check performance, vulnerabilities, and code quality — then deliver a full report with findings and recommendations. Ship with confidence, not guesswork.

✓ Scan results Performance 70/100 Security 40/100 Code quality 85/100

User voices

What vibe coders say
after using Kybr.

Real feedback from vibe coders who tried it.

★★★★★
Bug fixer

"I spent 3 days going in circles with AI. Kybr found the root cause in a few hours and sent me the exact code. Paste and done."

T.K

SaaS founder · Base44 user

★★★★★
Bug guardian

"Thought my app was ready to launch. Kybr found that users could sign up twice with the same email — before any real users did."

M.T

Product designer · Lovable user

★★★★★
Vibe shield scan

"Didn't realize I had exposed API endpoints until Kybr flagged them. The report was so clear I fixed everything without being an engineer."

D.Y

Non-tech founder · Claude Code user

How it works

Start to finish. 3 steps.

From sign-up to fixed code — straightforward.

  1. Apply and share your code

    Fill in the form. Share your project URL and describe the bug or issue. Takes about 2 minutes.

    ~2 min

  2. Our engineers investigate

    We inspect your code, find the root cause, and prepare the fix or scan report — depending on what you need.

    A few business days

  3. Receive the fix or report

    Get corrected code via GitHub (no AI credits needed) or a scan report with findings and recommendations.

    Done

Try Kybr free
while you still can.

Currently in early experimentation — all free until the official launch.

Your code is safe with us. We sign an NDA on request · Never shared with third parties · Handled confidentially
Start for free now →