Leo Heo

Building — PRD, IA & code in sync via MCP.

Designer → 4x founder, $10M+ revenue.
Timezone: Seoul, Ambition: PST 🇰🇷→🇺🇸

[Leo Heo @yesleocan]

Hi! I read the rules on Reddit about dev tools needing approval here first.

Most of my vibe-coded projects didn't die from bad code. They died around hour three, when the agent and I had quietly stopped agreeing on what we were building.

So I built Manyfast. Give it one line and it drafts the PRD, feature spec, user flows and wireframes, then hands the whole thing to Claude Code or Codex over MCP, so the agent starts from a real spec instead of a vibe.

Free tier, no card. Genuinely want to hear where it breaks for people who build this way. Link in the replies.

[Leo Heo @yesleocan]

@JoshuaIPark @mem_base @openclaw First paid user hits different🔥🔥🔥Congrats Joshua!

[Leo Heo @yesleocan]

Still planning your service through ChatGPT / Claude chats?

GPT gives you 'prose,' but https://t.co/HZMZuIXlZR builds an immediately executable 'blueprint'.

Now, structure your ideas into IA and functional specs in real-time.

[Leo Heo @yesleocan]

We gained 200–300 global users over 4 days at CES, catching a glimpse of our potential. However, the majority of our user base remains in Korea🇰🇷

So, I have a question: What is the critical difference between a "domestically-locked service" and a "global conqueror"? Is it just a matter of language and culture, or is there a "secret sauce" we haven’t discovered yet?

https://t.co/rXxJWtBEyN determined to go global. Please share your insights or "cheat codes" with our team! 💬

[Leo Heo @yesleocan]

To break this cycle, we’ve launched the https://t.co/HZMZuIXTPp, an AI planning editor. Input your idea, and AI turns it into a structured PRD that both humans and machines understand. Try it for free now and boost your project’s survival rate 🔥🔥🔥

[Leo Heo @yesleocan]

For 10 years, I’ve mentored hundreds of Korean startups as a UXUI consultant. The verdict? Most waste millions building 'pretty trash' nobody wants. Fix it in planning, and it's 100x cheaper than fixing it in code. If you don't know "Why," your project is a ticking time bomb💣

[Leo Heo @yesleocan]

Just splurged on this hoodie—now I’m officially on a mission to send my son to Stanford 🎓

But first, I need to sell my SaaS! If you're building a products, use https://t.co/rXxJWtBEyN to generate your PRDs and project plans. It’s 10x faster and higher quality.
Help me fund my son’s tuition 🙏

[Leo Heo @yesleocan]

@robert_shaw We building https://t.co/HZMZuIXTPp The AI Planning Editor.

[Leo Heo @yesleocan]

Guess what? We closed our Seed round from ACs & VCs & Korean government even before launch. 💰 Now it's time to actually 'sell' it.

As AI flattens dev skills, "https://t.co/HZMZuIXTPp"—the planning tool for both AI & humans—is your ultimate survival weapon. Join us now!

[Leo Heo @yesleocan]

As AI builders, micro-agencies, and SaaS products flood the market, technical barriers are vanishing.

In this hyper-competitive era, what do you think will be the ultimate competitive edge that sets the winners apart? Share your thoughts below! 💬

[Leo Heo @yesleocan]

We’re in an era where planning must be clearly understood by both AI and humans. We created https://t.co/HZMZuIXTPp to empower micro-agencies and freelancers with this essential weapon to thrive in the new landscape 🔫

[Leo Heo @yesleocan]

The IT outsourcing market is polarizing.

Platforms and offshoring are swallowing the middle market. As AI flattens development skills and crashes unit prices, "structured planning" has become the only true differentiator 🫧

[Leo Heo @yesleocan]

@VadimStrizheus It’s definitely possible. But the key is in the details—high-precision prompts and structured PRDs are a must. That’s exactly why we’re building https://t.co/HZMZuIXTPp to help you generate enterprise-grade specs and instructions!

[Leo Heo @yesleocan]

@gjpeixer Glaicon, this video is pure gold! 🤩 I'll be sharing this directly with the entire team to make sure we address every point you've raised.

Are there any other specific features or 'pain points' you’d like to see improved? Your insight is incredibly valuable to us! 🙏

[Leo Heo @yesleocan]

Anyone can come up with an idea, but the journey of turning it into a real 'product' is a relentless struggle.

https://t.co/HZMZuIXTPp completely reimagines this process. Simply toss out a rough idea, and our AI digs deep with sharp, insightful questions.

#BuildInPublic #AI

[Leo Heo @yesleocan]

I ran a design agency in Korea with 20+ employees and $4.5M+ ($6B KRW) in cumulative revenue🇰🇷

Then, I decided to pivot hard into an AI-SaaS startup and just closed our Seed round.

The cost? Last year, my turnover rate was over 100% 🥵

Anyone want to hear the "behind-the-scenes" of this brutal transition?

[Leo Heo @yesleocan]

@helderbuilds Thanks! We're using Korea as a testbed, but our ultimate goal is definitely global. To dominate the IT dev space, you have to go big right out of the gate🌉

[Leo Heo @yesleocan]

Forget K-Pop, I’m building K-AI! 🤖🇰🇷

I’m an AI founder from Seoul, building in public and looking for global builder friends. Let’s support each other and grow together.

Follow for follow? Drop what you're building below! 👇🚀

#BuildInPublic #AI #GlobalNetworking

[Leo Heo @yesleocan]

CES 2026 was my first-ever US trip🇺🇸
Honestly, the US market feels as scary as it is exciting. But I’ve learned that this fear is actually a sign of respect for the challenge.

In the Bay Area, I realized that true growth needs both ambition and humility. Nervous? Yes. But I’m ready to build with sincerity🚀

[Leo Heo @yesleocan]

Let me introduce myself first!

I’m building a new standard for AI Planning - https://t.co/HZMZuIXTPp

[Leo Heo @yesleocan]

@helderbuilds i think that sooo, Helder.