Personal Details




+82 10-2060-9858




2010–2011 Korea Digital Media High School (Dropped out)



Mentor of STAC.


Mentor of Ittda.


2014– StyleShare

Software Engineer.

iOS application:

Backend Server:

2011–2014 Joyfl

CEO & Founder.

2011–2012 Software Maestro

Certificated mentee. Developed iOS games based on Cocos2D and iOS social network services.

Joyfl Projects

2014 Betabox (Prototype)

The easiest way to deploy your beta builds.

2014 My Food List

Find and save your favorite places where have you been or you want to go.

Collaborated with Kobalt60.

iOS application:

Web frontend:

Backend server:

2013 Dish

Share your own food recipe.

iOS application:

2012 Evermind

Evermind is a handy tool that makes it easy to mindmap your idea from your work, study, and everyday life.

Android application:

2011 I’m Traveling

Tell your ongoing travel.

iOS application:

  • Objective-C
  • Hybrid App

Outsourcing Projects

2014 Ment

Total mentoring solution with real-time video streaming.

iOS application:

Flash application:

2013 Sleep If U Can

Sleep if you can, forces you out of bed. #1 in the category in 35 countries. Featured by Cnet, Gizmodo etc.

iOS application:

2012 Fanpple

SNS for stars and fans.

iOS application:

Open Source Projects

2016- RxTodo

iOS Todo Application with RxSwift + MVVM

2016- RxKeyboard

Reactive Keyboard in iOS

2016- URLNavigator

Elegant URL Routing for Swift

2015- Then

Super sweet syntactic sugar for Swift initializers.

2015- CocoaSeeds

Git Submodule Alternative for Cocoa.

2014- UITextView+Placeholder

A missing placeholder for UITextView.

2014- SSBouncyButton

iOS7-style bouncy button. Used in StyleShare for iOS.

2014- SwipeBack

Enable iOS 7 swipe-to-back when custom back button is set.

2014- Korail

An unofficial Korail API for Python.

2013- Allkdic (올ㅋ사전)

A handy dictionary for OS X. Around 2,000 people are using.

2013- Toaster

Toast for iOS with very simple interface. Written in Swift.

2011- as3id3lib

ActionScript 3.0 id3 library.

2011- 4Shared Downloader

Download files from immediately.

Other Activities

2013- Founder of Sexy iOS Developers Korea, a community for iOS developers in Korea. Supported by Microsoft.

2011- Founder of Flash Platform Developers, a community for Flash platform developers.