Collin Ruffenach is a mobile developer for ELC Technologies. He creates a variety of iPhone applications for both the iPhone and iPad. He received his master's degree from Arizona State University in 2010.
Johannes Fahrenkrug is a freelancer who has been handcrafting software for over 10 years. He has been developing for the iPhone since day one, is very active in the Open Source community, regularly speaks at conferences, and always attends WWDC. He blogs
Christopher Fairbairn has 10 years experience developing mobile applications on Palm OS, Windows Mobile, iPhone and J2ME. He's active in the developer community and blogs at http://www.christec.co.nz/blog/, and his efforts in the Windows Mobile community earned him a Microsoft Most Valuable Professional award.