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Products that do what DontBuild.it does

Signal-first startup validation

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    Is your app idea actually worth building?

    Apr 2026 · build-check.com

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    Roast (+fix) your startup idea in 3mins before wasting 3mths

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    Find out what your market wants before you waste months

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    Unbiased and unfiltered assessment of your startup plan.

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    Find weak spots in your startup idea. Real data, not vibes.

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    Critq103

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    50% off Build Signals for the first month

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  13. 13

    Validate startup ideas in seconds before wasting months

    Jun 2026 · ismyideavalid.com

  14. 14IA

    I was working on validating some of my own project ideas. While trying to find how to validate my idea, I realized the process itself could be turned into a tool. A few late nights later, I had something that takes any startup idea, fetches discussions, summarizes sentiment, and gives a quick “validation score.” It’s very rough, but it works, and it’s already making me rethink a few of my own ideas. It's still a work in progress. I don't actually know what I'm doing, but I know it's worth it. Honest feedback welcomed! Live demo here: https://validationly.com/

    2025 · validationly.com

  15. 15

    Stop your AI from building the wrong app

    Jul 2026 · github.com

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    Destroy bad ideas before you build

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    Validate your startup idea in minutes — not months.

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    Stop building things nobody wants. One brief a day.

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    Launch a profitable SaaS with confidence

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    Navio9

    Honest second opinion on your startup idea. Before you build

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  21. 21

    Claim Validated Startup Ideas: Timing + Demand + Tech

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    Validate ideas before you build

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  23. 23FS

    HN is the best for honest feedback, help me improve my product! It's not failure, it's only feedback, thanks hackers. http://gameofchat.com

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  24. 24SC

    URL: startitup.co Hey guys, we've built a startup guide with a focus on growth hacking and lean startup methodology. We'd love to get some feedback on what you guys think about the platform and the content. Thanks!

    2013

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