Xin Z.

Xin Z.

Top 1% iOS/Android App Developer

DanDong, China



What's the difference?
Xin Z.

✮✮✮✮✮ Top 1% iOS/Android App Developer ✮✮✮✮✮

For over 5 years, I have developed many iPhone/iPad/Android Apps such as Photo & Video Sharing Apps, Location Based Apps, Augmented Reality Apps, Contents Management Apps, Trivia Quiz Games, and so on.
I mastered various kind of iOS Frameworks, Facebook/Twitter/Google+/Foursquare SDKs, MapKit, REST API, SOAP API, JSON/XML, PHP & MySQL, and so on.

My skills and experiences are following :

1. App
- Social Networking Apps(like Facebook, Twitter, Four…


Xin Z. has added 6 portfolio pieces. Create an account to review them.

Work History & Feedback

AR Demo

“Xin is Great!!!”
5 hrs @ $33.33/hr
Earned $167

AR Demo

“Xin was a pleasure to work with from start to finish on our project. His availability and communication throughout the process was excellent. We will definitely work with him again very soon.”
40 hrs @ $33.33/hr
Earned $1,333

iOS App - Estimate Calculator

“Xin is absolutely GREAT to work with. First of all, his English is great which makes things very easy. He understood exactly what I needed (even when I couldn't explain it very well). He is ALWAYS available. He works hard, fast, and intelligently. I have used a lot of app developers on oDesk trying to find the right one for my projects, and Xin is that developer. It couldn't have gone any better. Thank you Xin!!!”
110 hrs @ $33.33/hr
Earned $3,666

Aviation Project

“Xin is a great programmer with a lot of talent. He was quick to grasp the project and worked hard to make it better than I had anticipated. Xin devoted a lot of time and resources to the project and I appreciate his dedication. In addition to his programming skills, Xin is very communicative and always kept me in the loop on the progress of the application. As we got to the final steps of the project, he worked hard to polish the final program.Overall, I feel I got my money’s worth and have chosen Xin for my next project.”
33 hrs @ $33.33/hr
Earned $1,100

iSee - Torch/Flashlight app for iPhone

“Definitely one of the very best developers I have come across. Xin produced my iPhone app (iSee) and did a fantastic job at it. Highly recommended and reasonable hourly rate.”
33 hrs @ $33.33/hr
Earned $1,100

create an app for real estate report

Fixed Price $556
Tests Taken
Name Percentile Score

Cocoa programming for Mac OS X 10.5 Test


Google Android Programming Test


Java Test


JavaScript 1.8 Test


MySQL 5.0 Test


Objective C Test


PHP5 Test


U.S. English Basic Skills Test


iPhone Programming OS 4.0 Test