This free business idea generator takes what you already know, what you can already reach and what you can afford to put in, and returns four businesses you could start against those constraints. Each one names a specific buyer and the expensive workaround they use now, points at where that demand is already documented, states the specific reason it is hard, and gives you a test that costs under $100 and produces an answer inside a week. It covers any shape of business — service, productised service, physical product, local, software — and favours the ones that can take money in the first week.
Skills, a trade, an industry, a community you're part of. The more specific, the less generic the ideas.
Two inputs shape the output more than anything else: what you already know, and what you can put in to start.
The budget band matters because it changes the category, not just the scale. Under $500 rules out inventory and rules in services, productised services and digital products — businesses where your time is the capital. At $5,000 and up, stock, equipment and paid acquisition become possible, and the risk profile inverts: you can now lose money rather than just time.
The experience input matters because a business you can start on Monday beats a better business you would need six months to understand. A qualified electrician who knows every builder in one city has a distribution advantage that no amount of market research substitutes for.
The generator is biased, on purpose, toward businesses where somebody can pay you almost immediately. That rules out a lot of things that sound impressive:
What survives that filter tends to look unglamorous: a specific service for a specific trade, a productised version of something people currently hire an agency for, a physical product for a niche that already buys online. Boring and specific is the point. Revenue in week one is not a small ambition — it is the only reliable evidence that anyone actually wants the thing.
Every idea comes with a "catch" field, and it is the most valuable line on the card. A catch that would apply to any business — competition, execution, marketing — has told you nothing. This generator is instructed to name the specific thing most likely to end this idea for you: the licence you would need, the seasonality, the customer who churns after one job, the supplier who sets your margin.
Read the four catches before you read anything else. Founders normally discover them in month five, after the money and the enthusiasm have both gone in. Getting them on day zero is the closest thing to a free lesson available.
If a catch reads as fatal to you, that idea just saved you a quarter — which is the same service the rest of kitty.build provides, only faster.
Four ideas is a shortlist, not a decision. The step that matters is the one after: put the survivor in front of a real buyer with a real price and see whether money moves.
Every idea card here opens the Idea Validator inline, so you can get a scored verdict and the killer risk without leaving the page. That is triage — one pass, no research. Then run the first test that came with the idea. It was written to cost under $100 and finish inside a week precisely so that "I'll think about it" never becomes the outcome.
If you want the researched version — who already sells this, what they charge, what their reviews complain about, and an honest GO / PIVOT / NO-GO with sources — that is the full run inside kitty.build, free for your first idea.
Nine specialist boards research your idea live and return a cited verdict. If it's worth building, the same engine builds and runs it — website, posts, ads, inbox — with nothing outbound sent until you say yes. Your first idea is free.
Feed her an ideaNo card · No revenue share, ever · Your repo, your domain, your data