HOWAI
HOWAI: Stop wasting time on AI prompts that don't work.
Start new thread
Takahiro Kojima

HOWAI - HOWAI: Stop wasting time on AI prompts that don't work.

by•
HOWAI is what Cookpad did for cooking — but for AI prompts. A community where people share step-by-step AI workflows, rated by everyone who tries them. Each recipe gets a reproducibility score— HIGH, USER REPRODUCED, or NEEDS UPDATE — so you know what works before wasting your time. Try a recipe, leave a practice report. The score updates automatically. Good prompts rise. Outdated ones get flagged. Built in Japan. Launching here to see if the concept travels.

Add a comment

Replies

Best
Takahiro Kojima
Maker
📌
Hi Product Hunt community! 👋 I'm Takahiro, the founder of HOWAI. First, a quick note: Currently, the platform is optimized for the Japanese market, and the main app is in Japanese. However, we’ve created an English landing page (howai.vercel.app/en) to share our vision with the global community. We are here today because we want to know: Does this concept resonate with you? The Problem: AI is evolving too fast: Everyday users are struggling to keep up with the constant updates (Model Drift). Information is scattered: Great prompts are buried in endless SNS feeds, making them nearly impossible to find or reuse effectively. The Solution: HOWAI — The "Cookpad" for AI. In Japan, we have a unique culture called "Cookpad," where millions share and refine recipes to make life better. We realized the AI world needs exactly the same thing: a centralized, "living knowledge base." We don’t just share prompts; we guarantee their reliability through our unique "Reproducibility Cards" that specify the exact model and parameters used. Our Goal: To turn "I don't know how to use AI" into "I have the perfect recipe for that." We want to see if this "Cookpad model" for AI is something the global community would find valuable. I’d love to hear your feedback, thoughts, and whether you'd like to see a global version of HOWAI! Thank you for your support!