Yasuhiro Inami has been dedicated to software development for 6 years, which includes iOS apps with Objective-C. He creates messenger, camera, and news apps for work, and he also spends time on making open source projects, especially with the new and modern Swift language. You can find him at https://github.com/inamiy.
David McGraw is an entrepreneur and mobile consultant. He started building games for the iOS platform in 2008. He achieved success in 2011 after launching his third game, Colorflys. Colorflys spent most of 2011 being featured on iTunes, and reached the top 10 ranking on iPad.
In 2012, he formed Moonlit Solutions to help companies build successful mobile products. Since then, he has assisted established brands (Microsoft and AOL), small businesses, and several start-ups (Evomail and Tappy).
When Apple announced Swift in 2014, he was at WWDC and felt a surge of excitement. He has since built several projects using Swift and loves working with the language. He writes about Swift at http://www.xmcgraw.com and on Twitter at http://www.twitter.com/xmcgraw.
Ravi Shankar is a multiskilled software consultant with over 15 years of experience in the IT industry. He has a good, all-round ability to work on different technologies and extensive experience in product development, system maintenance, and support. He is a polyglot and a self-taught programmer with hands-on experience of Swift, Objective-C, and Java. He believes in gaining knowledge through sharing and helping others learn.
Tatsuya Tobioka is a software engineer familiar with Ruby, JavaScript, Objective-C, and Swift. He lives happily with his beloved wife and children in Tokyo, Japan.
He started iOS development in 2010 and then released a number of apps for developers, such as JavaScript Anywhere, Edhita, and CoffeeScript At Once.
Currently, he spends much of his time learning React, Arduino, Go, and WatchKit.
You can check out his open source projects on GitHub at https://github.com/tnantoka and his tweets on Twitter. His Twitter handle is @tnantoka.
Ye Xiaodong is a full-stack software engineer and technical director of zai360.com, an O2O company that provides a recyclables collection service for Chinese family customers on a periodical basis. He has 7 years of application development experience working for startups and leading companies across the world on iOS, Android, Windows Phone, Symbian, and Meego. He has developed lots of iOS applications; designed, created, and maintained iOS libraries and Xcode plugins; and contributed to open source projects, as he is passionate about bringing the latest features to applications.