Ideas into products, end to end.
Web, mobile, and backend — planning, designing, building, and running every service in-house.
Built end to end, in-house
Nothing outsourced. From the first idea sketch to the moment it reaches real users, every step is built and owned in-house.
Ship fast
Doing over meeting. When an idea strikes, it gets built and put out into the world right away.
Run it myself
Launch isn't the end. I keep polishing and improving every week based on real user feedback.
User-first
Not flashy features, but services that actually get used and solve real problems.
I can build just about anything
From frontend to infrastructure — full-stack, end to end.
Web Services
Responsive sites, admin tools, and SEO-ready web services built end to end.
Mobile Apps
Native and cross-platform apps shipped and maintained on both the iOS and Android stores.
Backend · Infra
API design, databases, and cloud infrastructure — the backbone of every service, built by hand.
AI · Automation
Combining LLMs with data collection and analysis to automate the repetitive and create new value.
Services I build and run
Ideas taken all the way — into products real people use every day.
Voca Class
The best service for creating your own vocabulary and learning. Create classes, share wordbooks, and try real-time quiz battles.
WineDB.kr
View the complete history of wines imported into Korea. Track histories by importer and individual wine.
Notina
The world's only service that forwards SMS, KakaoTalk, and call notifications from your sub-phone to your main phone.
Pace Teller
A running app that lets you adjust your pace while listening to your estimated arrival time in real-time.
OrderBee
A smart order management service that automatically collects and manages delivery app orders.
KiKee
A smart way to keep your child safe — a family safety app that connects parents and kids for peace of mind.
TeeTube
Enjoy YouTube music offline. Save your favorite tracks and listen anytime, anywhere.
Zoomoney
A smart ledger and financial management service for individuals and small businesses.
Real-time chat, opened with a single code
A lightweight live chat you join with a 6-digit code — no sign-up. Spin one up instantly for a seminar, an event, or a small gathering.
- Instant entry by code, no account
- Real-time messaging & member control
- Works on mobile and desktop
Let's build together
A new service idea, a collaboration, anything at all — feel free to reach out. I'll reply by email.