Build Check

Build Check, created by independent builder @elgermerlo, is a free validation tool helping people assess whether their app idea is worth developing before investing time and resources. A 12-question quiz evaluates a concept, scored across a 6-dimension framework — Real Problem, Frequency & Pain, Target Audience, Builder Fit, Demand Signals, and Personal Drive — generating an instant scorecard with A-F grades and dimensional breakdowns. AI-generated next steps provide tailored recommendations based on the weakest scoring areas, and a 48-hour validation experiment suggests quick testing approaches before writing any code. A DIY prompt version lets users copy the same framework to run in Claude, ChatGPT, or Gemini directly. The tool is completely free, with no credit card required and no freemium tier.