Roast My Business Idea

Everyone thinks their idea is the next big thing. Let's find out. Describe your business idea and get three takes: a roast that finds the holes your friends are too nice to mention, a skeptical investor's honest reaction on market size and defensibility, and a potential customer's read on whether anyone would actually pay for it. Free, instant, and the cheapest way to find out if your idea has legs before you quit your job over it.

The tool evaluates your business idea the way the market actually judges it: fast, competitive, and unsentimental. The roast persona targets the "Uber for dogs" comparisons, the inflated TAM claims, and the missing monetization strategy. The investor persona asks whether this is a real business or a feature disguised as a company — probing market size, defensibility, competitive landscape, and whether the path to revenue makes sense. The customer persona answers the ultimate question: would I pay money for this, or is it a nice-to-have that nobody will budget for?

This is for founders at any stage — whether you're validating an idea on a napkin, preparing for accelerator applications, or deciding whether to go full-time on something. It works for tech startups, local service businesses, content businesses, marketplaces, and everything in between. Once your idea is validated, try our Roast My Pitch Deck tool to sharpen your fundraising narrative, or our Roast My Landing Page tool to test your first conversion page.

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Recommended Tools

Validate and grow your idea with these tools after our roast.

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Notion Business planning workspace
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Tally Free form & survey builder
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Canva Business pitch & plan design

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Frequently Asked Questions

The more detail you include — the problem, your solution, target customer, and how you'd make money — the more specific and useful the feedback. But even a one-sentence idea can get a useful first reaction.
Market size, how defensible the idea is against competitors, whether there's a realistic path to revenue, and whether the overall thesis makes sense — the same questions a skeptical VC would ask in the first five minutes.
Yes — local service businesses, retail, content businesses, agencies. The personas adapt to whatever you describe. The more specific your input, the more useful the output.
It'll surface obvious weaknesses, market concerns, and blind spots — but no tool can guarantee whether an idea will work. Think of it as a fast reality check before you invest serious time or money.
Yes — nothing you submit is stored or shared. That said, avoid pasting proprietary information you wouldn't want processed by a third-party AI tool.
The roast surfaces what to investigate further — talk to potential customers, run a small test, build a landing page to gauge interest. For the landing page step, try our Roast My Landing Page tool to make sure your first conversion page is clear and compelling.
The investor persona evaluates competitive landscape and defensibility as part of its analysis. If you mention competitors in your description, the tool will assess whether your differentiation is clear or whether you sound like every other option in the market.
Get feedback first — it's free and fast. If the roast reveals fundamental problems with your thesis, you've saved weeks or months of building something the market doesn't want. Use the feedback to sharpen your idea before committing to an MVP.
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Try Our Other Roast Tools

Get a second opinion on your content from a different AI persona.

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Roast My Pitch Deck

Get your startup pitch roasted by AI with a skeptical investor's real take.
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Get conversion-focused feedback on your single-page landing experience.
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Roast My Website

Get your website torn apart from four angles: roast, customer, SEO, and designer.
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Roast My Code

Paste any code snippet for a brutal roast and a friendly code review.
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