Tools

Startup idea validator

Describe your idea and who it is for. You get a frank review: where it is strong, what could sink it, and three cheap experiments to find out for real this week, before you build.

  • Free
  • No signup
  • AI review
0/600 · at least 20 characters

Your text is sent to Google Gemini to write the review. LarkLaunch doesn’t store it. 5 reviews a day.

How to get a useful review

  1. Describe what the product does, not how it works inside. One or two sentences is enough.
  2. Be specific about the customer: “freelance designers billing over $5k a month” beats “small businesses”.
  3. Say how they cope today, even if it is “they don’t”. That is where your competition really is.
  4. Run the review again after narrowing the customer or the problem, and compare.

A review is not validation

No tool can tell you whether people will pay. Only people can, by paying, signing up or giving you their time. Use the review to find the weakest assumption in the idea, then test that assumption with the experiments it suggests. Five honest conversations with the right customers are worth more than any score.

Our guide How to validate a startup idea in a week walks through those experiments day by day, with scripts you can copy.

What to do with the result

A strong review means it is worth a week of testing, not that you should start building. A weak one often points to a narrower customer or a sharper problem. When the tests come back positive, plan the launch with the launch planner.

Frequently asked questions

Can AI really validate a startup idea?

No, and this tool does not pretend to. Only customers can validate an idea, by paying or committing their time. What the review does well is point out the weak spots quickly and turn them into specific experiments, so the week you spend validating tests the right things.

What happens to my idea?

Your text is sent to Google Gemini to write the review. LarkLaunch does not store it. If your idea is confidential, describe it in general terms rather than in detail.

How are the scores decided?

The review rates five things from 0 to 10: how painful the problem is, how big the market is, how much room there is against existing options, whether people are likely to pay, and how easy the customers are to reach. The overall score weights pain and willingness to pay twice, because they matter most for a first product.

My idea scored low. Should I drop it?

Not on the strength of one review. Read the riskiest assumption and run the experiments: five conversations with real customers will tell you more than any score. Often a low score points to a narrower customer or a sharper problem worth pursuing.

Is there a limit?

You can review 5 ideas a day. The limit resets at midnight UTC.