Profile image of ifriends710
Flag of China dandong, China
Member since March, 2013
11 Recommendations

Chance Software Developer 

Thank you for considering my profile. I have have been developing iOS & Android apps over 6 years. I can help you develop iOS , Android apps, Backend apis. My another major skill is web and mobile GIS application implementation. Most of my clients have been satisfied our job results. Here is one of reviews from my clients. - “Excellent developer. Fast, responsive and super impressive results” - I've started my professional experience as C/C++ developer in 2005. During the 4 years I developed a low-level system software for Windows/Linux platforms. In early 2009 I've set my eyes onto Apple devices and started developing mobile software. And I am working in GIS apps with a great GIS expert who has 10 years experiences. I am crazy in code quality - it makes me happy when I feel I do a perfect job. Also some of my personal projects I've shared to open source community. I can lead many developers for the project too. Looking forward to working with you and good luck with your project.
$50 USD/hr
141 reviews
  • 95%Jobs Completed
  • 97%On Budget
  • 100%On Time
  • 25%Repeat Hire Rate

Recent Reviews

  • image of frankyyap Modify Existing project based on RxSwift $1980.00 SGD

    “Great skill set from Xin Zhe. We don't need to QA too much as he will handle the QA for us thoroughly. He will fix bugs that is due to his work anytime. He can learn and adapt to an existing project that he has not worked on before. Great job!”

  • image of denakadhum Improved Dijkstra using Maps (Android App) $400.00 USD

    “excellent mobile application developer,and always responds to my questions,professional in GIS”

  • image of gafamx Complete an iPhone application $49000.00 MXN

    “Excellent Freelancer”

  • image of shinyman313 Improved Dijkstra using Maps (Android App) $250.00 USD

    “very talented always available , and always answered all of my questions hire again for sure”

  • image of bayan525 Write some Software $1100.00 USD

    “I had a critical project within a limited time, ifriend made it perfectly within time he worked all days for my project to deliver it in the specified time and he was great communicater and very patient regarding requirements changing and very supportive. he worked on GIS and he was very experienced in this domain and programming domain, he provide me a very high quality product. i highly recommend working with him, and if i have any other project i will definitely choose him. Thank you Mr. ifriend”

  • image of friskmalta Mobile development €1500.00 EUR

    “The developer has provided quality and high fidelity UI and PHP code following standards throughout according to our requests. We demanded pixel perfect implementation for our iOS application which was delivered. The developer is very eager to work and has laid out milestones in a very logical way so that we have frequent deliveries of the code and can check the results of each milestone. Very easy to work with and communication in English is very good and clear all the time.”


Iphone Developer

Mar 2009 - Jan 2013 (3 years)

I devloped BillBoard(utility app),CloudRider(game) in six month. And I joined the research of Computer Vision.

Mobile Developer/Team Lead

Jul 2007 - Jan 2009 (1 year)



2002 - 2006 (4 years)


C++ Fundamentals (2010)



A new edge detection algorithm for flame image processing

Digital image processing is playing an increasingly important part in imaging based flame monitoring systems. A crucial step in flame image processing is to detect the flame edge, a dividing boundary between the area where there is thermo- chemical reaction and those without. The determination of flame edges is a precursor to flame image processing and measurement of flame parameters. Several known edge detection methods have been tested to identify flame edges but the results achieved are disappointing.



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