Tim Isted has been writing software for Macintosh computers since 1995. He also builds web applications using Rails, PHP, and .NET and has been known to develop for Windows machines too. Also a professional musician and singing teacher, he tries to divide his time fairly equally between conducting, accompanying, teaching, and writing software. Previous musings on Core Data for desktop development can be found on his blog at www.timisted.net, and he is also co-organizer of NSConference, a new Mac developer conference taking place in both Europe and the USA.
Tom Harrington switched from writing software for embedded systems and Linux to Mac OS X in 2002 when he started Atomic Bird, LLC. After six years of developing highly regarded Mac software he moved to iPhone in 2008. He develops iOS software on a contract basis for a variety of clients. Tom also organizes iOS developer events in Colorado. When not writing software he can often be found on his mountain bike. His website is www.atomicbird.com.