
Cobrai
AI-powered retention intelligence for subscription businesses.
@cobraisystem · X
Manual retention can’t keep up with your acquisition - sees the slip, forecasts the churn, and triggers the save that keeps your growth compounding.
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AI-powered retention intelligence for subscription businesses.
@cobraisystem · X
Manual retention can’t keep up with your acquisition - sees the slip, forecasts the churn, and triggers the save that keeps your growth compounding.

Play strategic games against AI models and see how different LLMs rank on an objective leaderboard.
masterchef2209 · HN
I created a platform to check which AI models is the best gamer

Create surveys, quizzes, and interactive games with AI-powered insights in one platform.
@lemhamza · X

AI-powered debate arena where you compete and receive skill ratings for your argumentation.
u/Bakari2Sense · Reddit
Built a persistent skill rating for debate, like a chess rating but for argumentation I built a persistent skill profile for debate called the Debate Fingerprint. Would love feedback. [Founder disclosure: I'm Bakari, building 2Sense at app.2sense.ai] The idea: every debate you complete scores you across 6 dimensions (Logic, Structure, Responsiveness, Persuasion, Emotional Control, Clarity) on a 0-1000 scale. The scores persist across all your debates and build a visual profile over time

Click through a Gen-Z bedroom with working iPod, bookshelf, and hidden easter eggs.

Collection of 125+ free calculators for finance, health, legal, real estate, and travel—no signup required.
@Arafat3599651 · X
Just launched 🧮 125+ free calculators — mortgage, BMI, debt payoff, compound interest, calories & more. No signup. No ads. Everything runs in your browser instantly. #buildinpublic #webdev #react



An interactive zombie survival game exploring multiple undead universes.
@Rajeev_Pogaru · X
ZombieVault: an interactive zombie survival site. I wrote a spec. Claude Code built all of it in one session. I didn't write a single line of code. My job was making the spec good enough that there was nothing left to guess. Live: If you played it — where did it break for you?

A free interactive wheel that spins to give you random yes or no answers for decision-making.
Yes or No Wheel — Spin the Yes or No Wheel - Get Your Free & Instant Decision - Struggling with a decision? Spin our free Yes or No Wheel for an instant, random answer! It's the simple, fun, and fast

Participate in community predictions; let time verify your guesses and track your rank.
geniushui · V2EX
我的第 4 个 Vibe coding 项目——猜一猜 网址: https://cai1cai.com/ 猜一猜,让时间验证你的判断 花了 2 天时间整出来的,请各位大佬给点建议!

Accept crypto payments directly to your wallet with instant settlement and no intermediary.
@QBitFlowApp · X
— the worst part of shipping is getting paid, so we make crypto payments as simple as a card, but the money hits your wallet instantly and stays yours (no processor sitting on your funds). Would love your feedback 🙏