Welcome to CrazyCat Lab

Indie Developer from Korea

• Mobile Developer • Side Project Maker • Quality First
See My Apps View Portfolio
📍 Based in Korea 📱 iOS & Android 🌙 Building apps after work

What I Do

  • Day job: Mobile developer at a company
  • Side projects: Apps I need, built with care
  • Philosophy: Minimal ads, maximum quality

Indie & Independent

One-person studio running side projects with passion. I make what I need, not what's trendy.

Day Job + Side Projects

By day, I work as a mobile developer at a company. By night, I craft personal apps in my spare time.

Quality Over Ads

Minimal ads, maximum usability. I build apps that I want to use myself — clean, fast, and respectful.

Smart HQ App Icon

Smart HQ

Smart home device management app provided by GE (General Electric). Users can easily control and monitor GE smart devices.

Released - Available on US App Store
MyData KKL App Icon

MyData KKL

Personalized financial data integration and asset management service mobile app by Kyobo Securities.

Android iOS
Released - Available on App Stores
Wallypto Beta App Icon

Wallypto Beta

Blockchain wallet developed by LG Electronics, Inc. for secure digital asset management.

Android iOS
Released - Available on App Stores
Cat President App Icon
Dog President App Icon

Cat & Dog President

Pet shopping mall apps featuring cat and dog characters, providing users with a friendly and fun shopping experience.

Released - Available on App Stores
Favoriit App Icon

Favoriit

Innovative secondhand trading platform with instant sales, real-time auctions, and story features for beloved items.

Android iOS
Released - Available on App Stores
StyleSeller App Icon

StyleSeller

Easy and fast SNS product sales platform for side hustlers with free multi-links, recommended products, and data-driven group buying.

Android iOS
Released - Available on App Stores
Dodo Music Player App Icon

Dodo Music Player

Automatically adjusts equalizer settings based on genre tags for optimal sound quality.

Android
Released - Available on Google Play Store
Water Coach App Icon

Water Coach

Smart Water Tracker. Personalized water goals, smart alerts, and analytics to build healthy hydration.

Android
Released - Available on Google Play Store
Window Close App Icon

Window Close

Fine dust/Ultra-fine dust alerts, Real-time air quality information and weather data.

Android
Released - Available on Google Play Store
Every Calc App Icon

Every Calc

Comprehensive calculator app with multiple calculation modes and beautiful design.

Android
Released - Available on Google Play Store
CatWalk App Icon

CatWalk

Simple and beautiful pedometer app that tracks your daily steps and walking distance.

90% Complete - In Development
📱

Daily Life Assistant

Smart daily planner with habit tracking and productivity insights.

70% Complete - In Development