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For apps built with AI tools

Fix your
vibe coded app

Your app works, and people use it. But can one customer see another customer’s data? Our U.S.‑based senior engineers find the security holes, close them, and add the tests and alerts your app is missing. The price is fixed. If the work runs over, we pay the difference.

The free code audit tells you whether to fix, rebuild or leave your app. Most fixes cost $15K to $30K, with a 12‑month bug‑free warranty on our work.

TodayYour app · built in LovableLoginsNot checkedCustomer dataNot checkedTestsNot checkedMonitoringNot checkedWith GnarYour app · liveLoginsReviewedCustomer dataReviewedTestsPassingMonitoringOnGo liveLive appWhere your users reach itHostingMonitoringSupportLiveGo liveTodayYour app · built in LovableCustomer dataNot checkedTestsNot checkedMonitoringNot checkedWith GnarYour app · liveCustomer dataReviewedTestsPassingMonitoringOnGo liveLive appWhere your users reach itHostingSupportLiveGo live

A vibe coded app is one built mostly by an AI tool, such as Lovable, Replit, Cursor or Bolt. The Gnar Company makes these apps safe for real customers. It finds and closes security holes, adds tests and alerts, and sets up hosting. Its senior engineers are U.S.‑based, the price is fixed, and the work has a 12‑month bug‑free warranty.

Fixed milestone price

Any overage on us

Guaranteed outcome

The software works as specified or we fix it

Twelve-month bug-free warranty

Three commitments on every build engagement

What changes

Four things we add so your app can handle real customers.

Security checkLoginsReviewedPermissionsFixedCustomer dataReviewed
Security checkLoginsReviewedPermissionsFixedCustomer dataReviewed

Security holes closed

We look for security holes and close the ones we find: one customer seeing another customer’s data, secret keys left in the code, or pages that skip the login.

Test runSign inPassesSave a recordPassesSearchPasses
Test runSign inPassesSave a recordPassesSearchPasses

Tests that catch broken changes

Automated tests check what your users do most, like signing in, saving and searching. A change that breaks one gets caught before your users see it.

MonitoringYour teamErrorCaughtApp onlineWatchedAlertReceivedFixStartedAlert
MonitoringYour teamErrorCaughtApp onlineWatchedAlertReceivedFixStartedAlert

Alerts when it breaks

If the live app goes down or starts showing errors, your team gets an alert.

Your appLiveLive appSet up for the users you have nowHostingDataOther tools
Your appLiveLive appFor the users you have nowHostingDataOther tools

Set up for real use

We set up your hosting, your database and the tools your app connects to, so the app is ready for your users.

Two ways in

Fix it or rebuild it.

We read your code and tell you which one you need. If it can be changed safely, we keep it and fix it. If it can’t, starting over often costs less than patching it.

Fix

Keep your code, add what’s missing

When the code is solid, we keep it and add the security fixes, tests, alerts and hosting it needs.

Your appYour codeKeptSecurity fixesAddedTestsAddedMonitoringAddedLive hostingThe same app, ready for real users
Your appYour codeKeptSecurity fixesAddedTestsAddedMonitoringAddedLive hostingReady for real users
Rebuild

The same app, on code you can add to without breaking it

When the code can’t be changed safely, we rebuild the app at a fixed price, with the same warranty.

Your appRebuiltPhase 1Phase 2Phase 3ScreensDataLoginsThe same app, rebuilt properly
Your appRebuiltPhase 1Phase 2Phase 3ScreensDataLoginsThe same app, rebuilt properly

Proof

Our work

We took over another firm’s code

Rebuilding the AARP Foundation’s Property Tax‑Aide platform

40%fewer clicks to complete an application, on average
14tools rebuilt on React and Ruby on Rails
Read case study

Early app to full product

The app behind Qeepsake’s family journal

20xgrowth in their user base
700,000+users
Read case study
See all our work

How it works

Free audit first. Fixed price after.

You get the fixed price before any work starts.

Your appWe read it firstCodeDataHosting
Your appWe read it firstCodeDataHosting
Step 1 · Start here

Free code audit

Under an NDA (a privacy agreement), we read your code and learn what the app does and who uses it. Then we tell you what we found: fix it, rebuild it, or leave it as it is.

Security fixesDoneTestsBuildingMonitoringNext
Security fixesDoneTestsBuildingMonitoringNext
Step 2

Fix or rebuild

We fix what the audit found, or rebuild what can’t be fixed safely, with a 12‑month bug‑free warranty. We call this Gnar Forge, our fixed‑price project.

Security updateDoneNew reportDoneSmall changeIn progress
Security updateDoneNew reportDoneSmall changeIn progress
Step 3

Ongoing support

Want us to keep it running? Maintain, our monthly support plan, covers hosting, monitoring and support from $1,000 a month. It’s optional.

Our record

Why Gnar?

Common questions

Frequently asked questions

Still have questions?

Who can make our Lovable prototype ready for production?

The Gnar Company can. Our U.S.-based senior engineers fix apps built in Lovable, Replit, Cursor and similar tools. We close the security holes we find and add the tests, alerts and hosting the app is missing, or rebuild the parts that can’t be saved. This work usually runs as Gnar Forge, our fixed-price project for smaller builds.

Can you take a Replit or Cursor prototype to production?

Yes. The Gnar Company takes Replit and Cursor apps to production, and Lovable and Bolt apps too, whether you have your first users or the app is already breaking. We read what’s there, then fix it or rebuild it at a fixed price. The result comes with a 12-month bug-free warranty.

Our vibe coded app has users now. What do we do?

Get the code checked before you add the next feature. The Gnar Company starts with a free code audit, done under an NDA. It tells you whether to fix the app, rebuild it, or leave it as it is. If your own engineers can do the fix, we’ll say so.

Is it safe to run a vibe coded app with customer data?

Not until someone checks it. A working demo doesn’t show whether one customer can see another customer’s records, or whether logins and permissions really work. The Gnar Company’s free code audit is that check, done under an NDA. If we take on the fix, closing what the audit found is part of the job.

How much does it cost to fix a vibe coded app?

Most Gnar Forge projects fall between $15K and $30K, including rebuilding something that was vibe coded and broke. The code audit before that is free. Either way, you’ll know the fixed price before the project starts, and that price is guaranteed.

Should we fix our AI-generated app or rebuild it?

Get it audited first, then fix it or rebuild it. The Gnar Company tells you which. If the code is solid, we keep it and add the security, tests and alerts it’s missing. If it can’t be changed safely, starting over often costs less than patching it. Either way, you get a solid version of your app with a 12-month bug-free warranty.

Does the guarantee cover an app someone else built?

It covers what we deliver. On a Gnar Forge project, The Gnar Company makes three promises. The price is fixed, and if the work runs over, we pay the difference. The app will do what we agreed it would do. And for 12 months, if something we built doesn’t work as agreed, we fix it at no charge.

Why not have our own team or a freelancer clean it up?

Often your own engineers should, if they have the time and know what to fix. The Gnar Company will tell you that on the call. If nobody inside can take it on, that’s where we come in. Whoever does the work, ask what happens when something breaks after. We back ours with three guarantees: a fixed price, a result that works as agreed, and a 12-month bug-free warranty.

What happens once the app is live in production?

The code is yours, in your own repository, with notes so another engineer can pick it up. The Gnar Company’s 12-month warranty covers code we delivered that doesn’t work as agreed. If you want ongoing help, our monthly support plan, called Maintain, covers hosting, monitoring and support from $1,000 a month. It’s optional.

Your appFree code audit first, under an NDACodeDataHostingOther tools
Your appFree code audit, NDA firstCodeDataHostingOther tools

Start here

Send us your app.

Start with a free code audit. We sign an NDA before we see your code. If your app is in good shape, or your own engineers can do the fix, we’ll say so. The audit is free either way.

Get a free code audit

Let’s Talk

Contact Us

Tell us what you’re trying to build or fix.