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Free AI UX roast

Roast my startup's website.

Your idea might be great. Your website is what strangers actually judge. An AI agent roasts your startup's landing page the way a skeptical first-time visitor would, in the ten seconds you actually get.

https://
Roast your own site or a competitor’s · no login, no card required · takes about 2 minutes

Plenty of tools will roast your startup idea. This one roasts the thing standing between the idea and a signup: the website. Founders are too close to their own product to see that the hero explains the tech instead of the value, that the CTA is buried, or that nothing on the page tells a stranger why to trust you.

ClapBack reads your landing page and site as a cold, skeptical visitor and marks where you lose them. Muddy positioning, a call to action that hides, missing proof, a signup that asks for too much too soon. Every finding cites the rule it breaks and shows the screenshot, so you can fix the page that's been capping your conversion.

What the roast looks for on a startup site

Nielsen · Match to the real world
Positioning in one line
Can a stranger tell what you do and who it's for, in plain words, above the fold? Founders default to describing the tech; visitors need the value. This is the most common startup-site failure.
Von Restorff Effect · Laws of UX
One obvious next step
A landing page should have one clear primary action. Five competing CTAs, or a buried "sign up," splits attention and drops conversion.
Jakob's Law · Laws of UX
Trust for an unknown brand
You have no brand equity yet, so proof matters more: logos, testimonials, real numbers, a human founder. The roast flags the missing signals a skeptic looks for.
Baymard · Form usability
Signup / waitlist friction
Asking for a company size and phone number before anyone's seen value kills early signups. It counts what you ask for versus what the first step actually needs.
WCAG 2.2 · 1.4.3 Contrast
Readable, not just on-brand
Trendy low-contrast palettes and tiny type look modern and read badly. It flags the text a real visitor squints at.
Doherty Threshold · Laws of UX
Load speed & polish
A slow, janky first paint reads as "early and fragile" to exactly the investors and customers you're trying to convince.

Questions

Does it roast my idea or my website?
Your website. It won't tell you whether to build the company. It tells you where your landing page and site are failing to sell the idea you already have, which makes it far more useful than idea-validation bots.
My site is a rushed MVP. Is it worth roasting?
Especially then. Early sites make predictable, fixable mistakes: buried CTAs, tech-first copy, missing proof. Catching them takes minutes and can lift conversion before you spend on traffic.
Can it roast a competitor's site too?
Yes. Paste any URL, your own or a competitor you'd like to learn from. It roasts whatever you point it at.
Do I get something I can act on?
Yes. Every finding is a concrete, ticket-ready fix with a severity and a screenshot, not a vague "improve your messaging." You can hand it straight to whoever owns the site.

Ready for the receipts?

https://
Roast your own site or a competitor’s · no login, no card required · takes about 2 minutes