Product planning, UX, frontend, backend, data modeling, deployment, and operations.
Design × Engineering × AI
Imagined. Built. Shipped.
I turn product ideas into apps, web services, AI tools, and the systems that keep them running.
Decisions shaped by live commerce, payments, policy management, admin tools, and legacy migration.
AI is part of the workflow, but product structure, system judgment, and final responsibility stay human.
Built beyond the screen.
I connect customer-facing UI with APIs, admin surfaces, policy controls, reports, billing, and deployment paths.
Comfortable in live systems.
My work includes live commerce, SQL Server logic, app/WebView integration, backoffices, and service-safe migration.
Product sense with engineering depth.
I care about how a product feels, but I also care about the data, rules, edge cases, and operating model that make it reliable.
Creative IP
Worlds, characters, and digital goods.
Human Override, app-born characters, and LINE stickers gathered as the creative side of my product work.
Recent Projects
Apps & games, shipped and in the works.
Music apps, kids' toys, a Korean-learning app and two games on the way, built end to end.
ReleasedWeb + App · Commerce
E Sangdan
Korean brands, bought for you and shipped abroad.
ReleasedBand Mate
Band Mate Music Practice
Your whole practice rig in one app.
ReleasedBand Mate
Band Mate Easy Guitar
Pick a chord pad and strum the strings below by swiping up and down.
ReleasedBand Mate
Band Mate Easy Perc
A percussion app you play by tapping the screen or moving your device.
ReleasedBand Mate
Band Mate Easy Bass
Enter bass notes in order, then play them by tapping the screen in your own rhythm.
ReleasedEducation App
MAJUHAN
Learn Korean on your own, one carefully designed lesson at a time.
In ReviewKids' App
Tinkibu RattleBox
A little box of musical surprises.
In ReviewKids' App
Tinkibu Little Home
A cozy 3D playhouse for curious little hands.
In ReviewCasual Puzzle
Tinkibu BlockBloom
A gentle block puzzle where every cleared row grows a little forest.
In DevelopmentMobile Gameworking title
Aqua Basket
A pump-driven water-basketball physics game.
In DevelopmentMobile Gameworking title
Bang! or Not
A comic Wild West bank game about one decision: shoot or hold your fire.
ReleasedIn ReviewIn Development
Earlier Projects
AI App
Snapcast
A mobile AI fitting room that turns a user photo and an outfit image into a saved, comparable try-on result.
Mobile Wellness App
Challang
A playful daily hydration app where drink logs fill a living water-cup aquarium while caffeine, alcohol, and recent history shape the recommendation.
Creative Archive
Human Override
An AI-assisted music, visual, essay, and worldbuilding archive for a machine-lit creative project.
More Work
Other shipped apps, web services, and systems.
Mobile App
SunDeck
A weather-aware outdoor tanning guide that helps users plan the sun, follow the rhythm, and save each session.
AI Mobile App
TarotHabit
A character-driven AI tarot counseling app where a personal question becomes a guided card reading, emotional record, and revisit-ready consultation history.
Mobile Wellness App
MyScapes
A personal soundscape studio for building layered ambient scenes that keep feeling natural over long listening sessions.
AI SaaS
RankLens
An AI search visibility SaaS that analyzes a public URL across SEO, AEO, and GEO signals, then turns the result into scores, reports, competitor comparisons, monitoring, and improvement actions.
AI Consultation App
48LAB
An AI-powered Saju consultation service that turns a first reading into an ongoing personal dialogue.
Travel AI App
ZooMoon
A mobile AI menu guide that turns menu photos, QR pages, kiosks, tablet ordering screens, URLs, and gallery images into safer, clearer order decisions for travelers.
AI Health App
SleepFit
An AI-powered sleep monitoring app that records the night, visualizes sleep patterns, and turns raw sensor data into personalized sleep insights.