Chang ShiYuan

Chang ShiYuan

iOS/iPhone/iPad Camera/Photo/Social/Location Based Developer

dandong, China



What's the difference?

Up to now, I have developed tens of apps on mobile platform such as iOS, Android, Symbian and Windows Mobile.

My apps cover the whole field, including camera/photo/video apps, location based apps, social apps, education apps, fitness apps, game apps and so on.

The sorts of games are also really various ones including social network game, quiz game, ball game, racing game, strategy game and so on.
During the development of many 2D/3D games, I'm well versed in Cocos2D, Box2D, ChipMunk and Unity…


Work History & Feedback

simple iOS photo app with steam effects

“He is good. Worked flawlessly and provided feedback and communicated well. Overall, I am satisfied and working with him on a separate job. Thanks and keep up the great work chang!!!”
49 hrs @ $33.33/hr
Earned $1,617

IPad photo booth app

“Chang is really professional, highly skilled and good person. He has worked very hard to complete the tasks in a very tight timeframe. He also worked on weekend, and was great to communicate with. He understood the requests and features very well, and also provided me with some suggestions and ideas. He will work on a lot of next projects of me. And im glad to found him. thanks a lot chang for being a part of my team!”
198 hrs @ $33.33/hr
Earned $6,594

Android App new screens to existing

“Chang did a great job, i will always work with him again”
Fixed Price $20

iPhone App Developer

“Chang is an absolute amazing person - He is very skilled, understand requirements very quickly and his communication is great. If you are looking to hire him then I can guarantee you that you will hire a great skilled resource.”
Fixed Price $400

iOS: Change TableView to WebView

“Done fast, well, with great communication. Will use again.”
Fixed Price $22
Tests Taken
Name Percentile Score

Cocoa programming for Mac OS X 10.5 Test


Google Android Programming Test


PHP5 Test


U.S. English Basic Skills Test


iPhone Programming OS 4.0 Test