Mohit Athwani is a self-taught iOS developer and has been developing apps since the early days of iOS 3. He has worked with several clients all around the world, and has carried out intense research in the field of facial detection and recognition on iOS. His app, iRajanee, became the number one app on the Indian app store, and has fetched him tremendous success.

Mohit started his company Geeks (http://www.geeksincorporated.net) with a friend in 2010, and has since also involved himself in conducting training sessions on iOS for students and corporates. His website, http://indianios.guru/, hosts a lot of introductory videos and tutorials on developing for iOS with Swift.

Rahul Borawar is a computer science graduate from Jodhpur Institute of Engineering and Technology in Rajasthan, India. He is a passionate software craftsman, and loves designing software for mobiles. From the start, he has been a mobile application developer creating applications for iOS and Android platforms. He has been working on mobile development since 2011 and has published many apps on the app store, such as Catch the Aliens (a 2D level-based game) and Draw Your Stories (a kids' app for creating fables with drawing stuffs). He is currently working as a software development engineer in the mobile team for a real estate product-based company (CommonFloor). He has reviewed one more book for Packt Publications, named iOS Game Programming Cookbook, which can be viewed at https://www.packtpub.com/game-development/ios-game-programming-cookbook.

You can follow him on Twitter (https://twitter.com/RahulBorawar) and on GitHub (https://github.com/Rahul2389). You can also check his website, http://rahulborawar.branded.me.

Chady Kassouf is an independent iOS and web development expert. He started programming 23 years ago and hasn't stopped since.

Seven years ago, he decided to leave his job as a team leader in one of the leading digital agencies and start his own business.

His interests, besides computers, include arts, music, and fitness. He can be found online at http://chady.net/.

Joni Mikkola is currently working on his next mobile game in northern Finland. He keeps his game developing stamina up by training regularly at the gym and eating healthily. Among developing games, he often reads books, plays the piano, or bakes buns, to keep his ideas flowing and his mind focused. He constantly keeps challenging the status quo, which, in turn, helps in learning new ways to create things.

He has developed games professionally for over 4 years mostly for mobile platforms. He targets casual games and focuses on creating simplistic designs. With one game released, he is currently working on his next game, which will be released in late 2015 for Android and iOS platforms.