About

What is R3O Works

R3O Works is a solo startup founded by Daiki.

There are things a big organization can’t do. There are things only one person can. Hear a user’s feedback directly. Fix it with my own hands. Ship it the same day. R3O Works is a place for that kind of craft.

Mission

“This one’s better.”

What I want to build are products that make people want to switch from what they’re already using. Not flashy new features – just a daily experience that feels a little more right. I stack those small differences until the product becomes the obvious choice.

The Name

R3O (R-three-O) comes from the name of my dog, Leo.

Leo passed away in 2023. When I decided to start something of my own, I wanted his name to live on in it. So I put “REO” into the brand name. The “3” in R3O is the letter E turned into a number – a small, playful twist.

The days Leo spent by my side are where my drive to build things began.

Founder

Daiki – R3O Works Founder & Engineer

I’m a software engineer who started R3O Works as a solo venture. My development style is “AI-native” – I use AI tools like Claude Code across the full stack, from planning and design to implementation and operations.

Every project starts the same way: a small frustration with an existing tool. That feeling of “this could be just a little better” is where I begin, and I build the alternative myself. My first product, Shutter, is a speed-first note app born from exactly that impulse.