22-year-old hits $13K/mo with an accountability app he built alone with AI. No ads, no team. Just Reddit.

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• A British AI entrepreneur, Marcus, built an accountability app called GoalPost for founders and freelancers.
• The app allows users to set goals with a monetary penalty if missed. It has grown from zero revenue in the first month to $13K per month within six months.
• Key to its success was Marcus’s strategy of focusing on problem-solving through posts about common challenges faced by founders, rather than directly promoting GoalPost.

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