GuardCue

Is your app safe to launch?

We check it the way an attacker would, then tell you in plain English what could cost you money, and how to fix it.

Free. No sign-up. We only look at what any visitor can already see.

This could end your business

Anybody who signs up can see other people's records.

what we didmade a new account that owned nothing, and opened the dashboard
what it showedfour records that were not ours, with names, emails and amounts
A dashboard listing four other people's records, every word blanked past its first two letters
What it means for youEvery customer can read every other customer's data. One curious user is enough; no attacker needed.
From a real scan of a test app built with this fault. Every word blanked past its first two letters.
What we find

Proof, not opinion.

Three findings, exactly as the scanner printed them, from test apps built with the faults we see in the wild. Two could end a business.

Could end your businessAn admin customer table with names, emails, phones and spend, every word blanked past its first two letters
The admin screen, opened by a plain account made moments earlier.

Any signed-in user can open your admin screen.

What it means for youYour admin screen is not private. Anyone who signs up can see what you see, including the delete buttons.
what we didopened the admin screen as a plain account
what it showedthe whole customer table
supabase/migrations
Your "customers" list, which holds email, full_name, phone, has no rules at all about who may read it.

Anyone who finds the address can take the whole thing.
Could end your business

Your customer list has no rules about who may read it.

What it means for youAnyone who finds the address can copy every customer you have, without signing in. This is the kind of leak you may have to tell every customer about.
what we didread the rules your database was set up with
what we foundnone, on the table that holds people
src/app/api/notify/route.ts
Your app uses Twilio, which charges you every time. Nothing limits how often a stranger can set that off.

One person running a simple script, at one text message a second, would cost you around 680 dollars a day. Left for a month that is roughly 20,400 dollars, and the invoice is how you would find out.
Costs you money

A stranger can run up your text message bill, with nothing to stop them.

What it means for youThe bill arrives before you know anything happened. This is found by reading your code, so it is caught before launch, not after the invoice.
what we didread the code, starting where messages are sent
what we foundno limit on how often one person can send
The numbers

This is not rare.

Real counts, each with where it came from. Nobody counts breaches by who built the app, so the split here is by tool.

Confirmed security holes traced to AI-written code, by year
2025 · May to Dec2026 · Jan to Mar only

Three months of 2026 already beat all of 2025. The tracker began in May 2025, and its researchers estimate the true count is five to ten times higher.

Georgia Tech Vibe Security Radar · 74 confirmed cases through March 2026 · via the Cloud Security Alliance
Built by founders, on Lovable, Bolt, Base44 and similar
2,038

Critical holes in 1,400 apps that researchers examined, plus 400 leaked secrets and 175 apps with customers' personal details sitting in the open.

Written by developers, with AI help
44%

Of the times an AI was asked to write code, it introduced a security hole, even with a developer at the keyboard. Unchanged since 2025.

How it works

Four steps. No developer.

You never touch code. You paste our words into the tool you built with, and it does the fixing.

1

Paste your address

Nothing to install, nothing to connect. We look at your site the way a stranger with bad intentions would.

2

Read what is wrong

Each problem in one sentence, what it could cost you, and the proof: what we asked, what we got back, a blanked picture.

3

Paste the fix

Every problem comes with the exact words to paste into Lovable, Cursor, Bolt, Claude Code or whatever built it.

4

Check it again

One click re-runs the check that found it and tells you, plainly, whether it is gone. Then we keep watching.

The rules we work by

What we will never do.

A security check you cannot trust is worse than none. These are not settings; they are how the product is built.

  • ×Change anything in your app. A free check only reads what a visitor could already see.
  • ×Keep your customers' data. A finding holds a count, a list of column names, and one sample blanked past its first two letters. Nothing else is stored.
  • ×Say "all clear" when we could not check. If a check could not run, the report says so, in those words, instead of showing green.
  • ×Run a test that could change your data without you switching it on, on its own screen, after proving the site is yours.
  • ×Show you a key you gave us, ever again. It is locked away and used only for the checks it unlocks.
  • Prove every finding. A problem is only reported once a check has actually seen it; a guess never reaches you.
  • Write for you, not for a developer. If a sentence needs a dictionary, it is a bug on our side.
  • Tell you what it costs before what it is. The consequence comes first, every time.
  • Lead with what you fixed when you check again, because that is the half nobody tells a founder.
Pricing

See it free. Pay for the fix.

A free check shows you everything that is wrong. Paying shows you how to fix it, in words to paste. No card to see the problems.

The free check

Every plan starts here. Paste your address and see everything that is wrong, with the proof, in plain English.

  • No card, no sign-up
  • One site, one page
  • Tells you if a problem is still there when you check again
Check my site, free
Business
$79
a month

A real business with real customers and something to lose.

  • Everything in Solo, plus:
  • We check every day instead of every week
  • We sign in as a test customer and photograph what they can reach, every word blanked
  • You can connect a key so we run the checks only an owner can run
  • Five sites, thirty pages of each
  • A hundred and fifty checks a month
Start with a free check
Agency
$199
a month

You build for other people and want every site you ship covered.

  • Everything in Business, plus:
  • Twenty sites instead of five
  • Fifty pages of each site
  • Six hundred checks a month across all of them

Nothing here is a different kind of check. It is the same Business plan with room for a portfolio: every client site watched daily, each with its own report and its own score page to hand over.

Start with a free check

Launching soon and would rather not subscribe?

Launch Check$29 once, for one site

Everything Solo unlocks, for one site, for thirty days. You fix what is wrong, check your work, and that is the end of it. It does not watch your site afterwards.

Start with a free check

Every plan starts the same way: a free check of your site, with no sign-up. You choose a plan from inside your results, and you can cancel a monthly plan whenever you like. Prices shown are our published list; the checkout shows the current price before you pay. See everything each plan includes →

Questions

What founders ask us.

I built my app with Lovable, Bolt, Cursor or Claude Code. Is this for me?

Yes, that is exactly who it is for. Those tools make apps that work, and quietly leave doors open that you cannot see because nothing looks broken. We find the doors, explain them without jargon, and give you the words to paste back into the same tool to close them.

Is the free check really free? What is the catch?

It is free, with no sign-up and no card. You see everything that is wrong, in plain English. What you pay for is how to fix it: the exact words to paste, the re-check, and the watching. We would rather you see the problem for free than not see it at all.

Could the check break my site?

No. A free check only reads what any visitor could already see, the same pages and the same public addresses. Anything that could change data is off unless you prove the site is yours and switch it on yourself, on a screen that says exactly what it does.

What do you do with what you find?

We keep a count, a list of column names, and one sample blanked past its first letter, so you can see it is real without us holding anything private. We never store your customers’ data. A picture of a leaking screen is taken with every word blanked before it is saved.

What if you could not check something?

The report says so, in those words. A check that could not run is never shown as a pass, because an all-clear you did not earn is the most expensive thing a scanner can give you.

I do not know how to code. Can I actually fix what you find?

That is the point of the paid part. Every problem comes with the words to paste into the tool you built with, written for that tool. You paste, it fixes, you press "check again", and we tell you plainly whether it is gone.

Which app builders and databases do you understand?

Any public website gets the full outside check. The deeper checks, the ones that look at your database rules and what a signed-in user can see, are built around Supabase, which is what Lovable, Bolt and most AI tools use underneath. If your app runs on something else, the free check will tell you what it could and could not look at.

What is the difference between the Launch Check and Solo? They cost the same.

They unlock exactly the same things. The difference is what happens afterwards. The Launch Check is a one-time payment: you fix what is wrong, you have thirty days to check your work, and then it ends and you are back to the free check.

Solo is that same thing, continuing. On top of it we re-check your site every week ourselves and tell you the moment something changes, for as long as you stay.

Launching once and then leaving it alone? Take the Launch Check. Have customers using it every day? Take Solo.

Can I cancel?

Any monthly plan, any time, from your own billing page, and it stays on until the end of what you paid for. The Launch Check is a one-time payment for thirty days and does not renew.

Find out before a customer does.

Check my site, free

About a minute. No sign-up. We only look at what any visitor can already see.