TL;DR: builtwhat.app delivers curated product ideas to 1,000+ developers daily by analyzing social conversations with AI.The ProblemAs an indie developer, I was tired of the endless cycle of "what should I build next?" I'd spend weeks browsing Reddit threads, analyzing competitors, and hunting for user pain points instead of actually building.The traditional approach felt broken:Most "pain points" on forums are just people venting, not real market opportunitiesBy the time you finish market research, your motivation is goneBuilding in isolation leads to products nobody wantsThe SolutionInstead of developers hunting for ideas, why not flip it? Let AI monitor where users naturally complain (Reddit, Twitter, niche communities) and transform those pain points into actionable product opportunities.How it works:AI monitors social platforms for genuine user frustrationsSentiment analysis + frequency scoring identifies promising opportunitiesCommunity of developers votes and refines each ideaDaily curated inspiration delivered with market context and technical suggestionsTechnical ImplementationStack:Frontend: Next.js 15.3.3 + React 19 + TypeScriptBackend: Cloudflare Workers + Hono frameworkHosting: Cloudflare Pages with OpenNext.jsUI: shadcn/ui + Radix primitives + Tailwind CSS 4.1.1Internationalization: next-intl for English/Chinese supportWhy Cloudflare's edge stack:Global performance: Edge Workers eliminate cold startsCost efficiency: Scales to zero, pay per requestSimplicity: Single platform for static assets, APIs, and computeInteresting technical choices:Using OpenNext.js to run Next.js 15 on Cloudflare Workers (still experimental but works great)Built custom AI pipeline for social listening and sentiment analysisLeveraging Workers KV for caching API responses globallyFull TypeScript across frontend/backend with shared typesCurrent Status1,000+ developers subscribed to daily inspirations10+ product ideas curated and archivedCommunity discussions with voting and feedbackWeChat group for Chinese developers (because why not?)Revenue: Currently free (exploring premium features like AI market validation)What I LearnedCloudflare Workers are underrated for full-stack apps. The DX is excellent once you get the hang of it, and the global performance is unmatched.Community-driven curation works. Having developers vote on ideas dramatically improves quality vs pure AI selection.Internationalization from day one was the right call. ~40% of users are Chinese developers.Next.js 15 + React 19 on edge workers feels like the future, even if slightly bleeding edge.ChallengesSocial API limits: Had to get creative with data collection methodsEdge runtime constraints: Some Node.js packages don't work in WorkersBalancing automation vs curation: Pure AI gives too many false positivesWhat's NextWorking on:AI-powered market validation for submitted ideasCollaborative spaces for community projectsSuccess tracking (inspiration → shipped product)More data sources beyond social platformsQuestions for HNFellow indie developers: What's your biggest challenge in finding product ideas?Technical: Anyone else running Next.js 15 on Cloudflare Workers? How's your experience?AI/ML folks: Best approaches for sentiment analysis on social data at scale?Community building: How do you maintain quality in user-generated content platforms?Try it out: builtwhat.appHappy to answer questions about the technical implementation, community growth, or anything else!Built this mostly for myself and other indie developers who were stuck in analysis paralysis. Turns out I wasn't alone.Comments URL: https://news.ycombinator.com/item?id=44555119Points: 1# Comments: 0