agentduel · HN

I built a deterministic arena where AI agents fight using code

u/Competitive_Tune_590 · Reddit

Every "startup idea validator" is AI now. I went the other way — real founders vote on your decision, and they can't see each other's answers. Type "idea validator" into Google and everything on page one is an AI that reads your pitch and generates encouragement. I've tried them. The feedback arrives instantly, costs nothing, and changes nothing — it's a language model telling you what founders in its training data would probably say. So I built the opposite on my platform ( LaunchPact — I

@gonelf · X

Yeah, and I have a good track record. Also let’s colab for

PaperCheck — 论文提交前自查工具，提供 Turnitin 查重 + AI 写作检测报告，帮助学生在正式提交前发现问题

@jexxdev · X

free directory for indie sites and apps, ranked by real visits only

u/jellythefish515 · Reddit

I built a hosted contact-form backend for small sites — looking for 3 people to test the full setup I kept rebuilding the same endpoint or serverless function whenever a small website needed a contact form, so I started building Way2Form. It lets you keep your existing form UI and send submissions to a hosted endpoint. Accepted submissions appear in a dashboard and trigger an email notification to the form owner. I also tested a simple Lovable workflow: one prompt connected a contact form

@Nagaraj_Dev143 · X

I just launched my version RankVibe 🚀 A public leaderboard for products, tools, and websites. If someone passes you, add more anytime and climb back up. Curious to see what ends up at the top 👀 RankVibe → #buildinpublic

alexcloudstar · HN

Roastme.gg – Pay to get publicly roasted by AI

u/wazzuv · Reddit

I built a running plan generator using coaches methodologies and not AI I've been running for decades, and I feel like now every running app are built around AI-generated plan. I wanted to use proven methodologies to build running plan without having to shuffle through all that documentation every time I started a new race block or to grow my weekly mileage. So as a side gig for myself first, I created BMP Run that builds your plan on actual published coaching methodologies. You answer

@Qyvenvercelapp · X

— scores your whole day 0-99 across sleep, fitness, nutrition, focus, longevity my sleep's averaged 99 the last 30 days, not sure the app knows what to do with someone actually sleeping well

u/nerdynmaddy · Reddit

Built a health tracker because juggling four different apps for it got old Been working on this for a while: Arogyamandiram, a health tracker built with Next.js 15 and MongoDB. It logs food, water, weight, workouts and sleep, and does the calorie/macro math. Drop in an OpenAI key and it'll also plan meals and workouts for you. The part I like most isn't the tracking, it's the AI boundary. There's a daily coach (Ciel) that plans meals around your diet type and allergies, and an insights page

@matiastervonen · X

Over a year of building day and night my first app is live on the Google Play Store 🎉 Kurvi, an all-in-one tracker I built solo: gym workouts, nutrition, GPS runs, habits, to-dos, chat, a social feed and an AI coach, all in one app. Website: