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This free guide helps you test if your product is a “must-have” (painkiller) or just a “nice-to-have” (vitamin).

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    “After mentoring hundreds of founders, I’ve seen the same pattern: vitamins struggle, painkillers scale. This checklist helps you know the difference—and build with confidence.”

    Burak Buyukdemir

    Founder of Startup Istanbul

    What you get:

    ✔️ 7 signals that prove your product is a painkiller, not a vitamin
    ✔️ How users react differently to urgent vs. optional solutions
    ✔️ Why urgency, frequency, and team buy-in matter more than market size
    ✔️ Real-world frameworks you can copy to evaluate your startup idea

    What is it all about?

    Most startups fail not because they can’t build a product—but because they solve a problem that isn’t painful enough. Investors and customers want to see urgency. They pay for painkillers, not vitamins.

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