Everything I build with AI

TR!NA

An artist under Synapse Ent.

Vynapse

An artist under Synapse Ent.

SLOKID

An artist under Synapse Ent.

Life4You Saju Engine

An in-house engine that reads Saju (Eastern astrology) data — powering the diary and relationship-map apps, with more on the way.

K-Webnovel Author Engine

A writing engine fluent in K-webnovel rhythm and convention — used to actually write and serialize live works.

VoXo

A platform for discovering music by taste.

WASD

Home base for a team bringing Steam games into Korean.

SoSic

A webzine on perspective and meaning — reading the moment, framing what's next.

SynoGames

Web games you can play right in the browser.

neko-diary

A diary app that logs your day and fortune through the Saju engine.

Life4You

An app that maps your relationships through the lens of Saju.

LinaPair

An app project in development.

ShiftNote

An app project in development.

AlgoRhythm

A streaming platform for discovering and listening to AI music.

Vølsyn

An artist under Synapse Ent.

YouTube

Syno

Fun psychological test

Syno Psychological Assessment Engine

Analyzes users' psychological assessment results based on research and publications from leading psychologists.

Paper Paws

Paper Paws is an English learning app where you can study 10,000 words and 50,000 practical example sentences with Dubu, an adorable cat. Save unfamiliar words to create your own vocabulary list and naturally learn how they are used in context.

Rebill

A subscription and recurring-payment manager that brings streaming services, AI tools, and memberships into one view—making monthly spending and upcoming charges easy to track.

DAYGE

A daily brain wellness app that combines quick cognitive check-ins with personalized training, helping you build a consistent routine and track changes in memory, focus, processing speed, and more.

Paper Sudoku

A relaxing Sudoku game where every solved puzzle brings a handcrafted paper world to life. Clear stages, take on challenges, and collect origami scenery and characters across classic, Killer, and random modes.

Play

Triple Match: Tile Puzzle Game

A casual puzzle game where players find and clear sets of three matching animal tiles from layered boards. Journey through a warm papercraft town and enjoy simple rules, increasingly elaborate 3D layouts, and the fun of building a charming tile collection.

Vypher

An artist under Synapse Ent.

Words Unfold: Word Travel Puzzle

A cozy word puzzle adventure where every word opens a new destination. Swipe across the letter wheel to build words, complete crossword grids, and discover hidden bonus words for your personal collection. Travel through beautiful handcrafted paper worlds and collect a new polaroid memory with every completed stage.

Play

Vortys

An artist under Synapse Ent.

S-Tools

I made this web tool site for my own use, so you guys should use it too.

Shift DB

A unified content database for discovering webtoons, web novels, dramas, and anime, tracking your progress, and continuing on official platforms.

ONL

Capture your thoughts with a time and a sentence whenever a moment matters. Revisit each day in chronological order, find past entries through the calendar and search, reflect on your monthly writing rhythm, and read your collected days like a book.

VERSO;RECTO

Explore ebooks and serialized fiction on an immersive 3D bookshelf. Discover your next read, save favorites to your personal library, and pick up where you left off.

Gaji

A visual planning workspace where you can map, organize, and track the entire journey of your thoughts from raw ideas to complete projects. Whenever inspiration strikes, open a tab to structure your mind with maps and diagrams, or manage daily schedules through flexible Kanban boards and calendars. By weaving together meeting notes and key milestones, you can keep your unstructured brainstorming and actionable plans connected in one beautifully organized place.

Chrome Extensions

HARU

Small actions add up to a day of your own. Create routines that fit your life, stay consistent with reminders and timers, and revisit your progress on the calendar. Join shared routines for a little extra motivation along the way.

Songbook — Your Karaoke Song Numbers

Keep the songs you love ready for your next karaoke night. Save TJ and KY song numbers in one place and organize them into personal groups. When you’re unsure what to sing next, swipe through cards from your saved collection. Songbook also offers song search, monthly new-song listings, and optional Google Drive backup.