Hi, I'm Yiwei, the founder of goglobal.to & volumn.ai.
I still remember the days when I kept scrolling on X but seldom gained followers back in November 2025. For a solo developer, marketing everything manually would be tricky without a smart, automated SaaS.
That's why I built volumn.ai, and grew my account from 0 to 1500 followers within 2 weeks. My SaaS proved really effective. I was so excited, and I wanted to share this fantastic SaaS with the whole world. I also tried DMs for cold start, which drove 10+ new customers/day for my friend who makes launch videos for YC-backed companies.
Two months later, I met my two co-founders. They supported me with real capital.
So I decided to take a gap year to build volumn.ai because I still have a dream to change the world.
I keep shipping every single day. If you want to book a demo, 👇 Or chat with me on X (or just reply to me). Here's the link: