LIVE
Hallo German
Designed for lightweight practical German learning.
A launched native Android German learning app built around daily vocabulary, sentence practice, and review flows.
Products
Product Lab Powered by Field Experience and AI
From child-friendly learning apps to custom utilities and desktop tools, we combine 20+ years of software practice with AI-native workflows to propose better product directions and build software people can actually use.
Featured Products
Released or actively prepared products shaped around real usage, platform constraints, and practical delivery.
LIVE
Hallo German Coach
Practice real-life German conversations and add custom AI scenarios.
A practical German conversation coach for real-life situations, speech practice, review, and AI-generated custom scenarios.
LIVE
Sseuri Seuljjeok (Pocket Drift)
Tracks daily spending and turns optional purchases into reflection moments.
A mindful spending tracker for recording daily expenses, reflecting on optional purchases, and checking budget flow.
LIVE
Lotto Sago Sipeunnal (Lucky Lotto Day)
Built around fast repeat use and clear number generation.
A lotto utility for generating numbers, saving sets, checking results, and reviewing winning-store data.
LIVE
QR Scan4u
Scans, generates, and transfers data through camera-first, network-independent workflows.
High-speed 1D/2D QR scanner and air-gapped optical file transfer utility connecting PC and mobile via screen-to-camera streams.
LIVE
Bongtu Guide: Korean Gift Money Calculator
Guides Korean gift money decisions with occasion, relationship, budget, and records.
An iPhone app for choosing appropriate congratulatory and condolence money amounts in Korea.
LIVE
SwiftBeam: Any Device Transfer
Explores frictionless local sharing across phones and desktops.
A cross-platform local transfer utility with app-to-app sharing, device discovery, and web fallback routes.
ACTIVE
AI Blogger
Turns AI-assisted blog writing into a controlled desktop publishing workflow.
A desktop control center for AI-assisted blog publishing across Tistory and Naver.
Product Experiments
Prototype work and internal tools used to test product directions before turning them into polished releases.
INTERNAL BUILD
Crypto Futures Auto Trading App
A structured dashboard experiment for strategy visibility.
A finance product focused on monitoring and automating strategy-driven trading workflows.
Finance ToolWeb
PROTOTYPE
Dividend Stock Management App
Tests clearer portfolio views for dividend-focused tracking.
An investment management product for tracking dividend-focused portfolios.
Finance Tool
Archived / Concept Projects
Paused concepts and older builds kept as traces of exploration, domain learning, and interaction experiments.
PROTOTYPE
Puzzle Game
An interaction study around tactile puzzle assembly.
A piece-matching game built around satisfying assembly mechanics and clear progression.
Game Prototype
PROTOTYPE
Whack-a-Mole Game
A compact timing and feedback experiment.
A reaction-based game focused on timing, clarity, and snappy feedback.
Game Prototype