Dave Hersey has over 35 years of experience in Apple software development, dating back to the Apple II personal computer in 1977. After a successful career of more than 6 years at Apple Computer, Inc., Dave started Paracoders, Inc. in 2000 focusing on custom Mac OS X-based application and driver development. In 2008, Dave's business expanded into iOS (iPhone) mobile applications, followed by Android applications soon after. Some bigger-named clients include Paramount Home Entertainment, Lionsgate Entertainment, Seagate, Creative Labs, and Kraft. Most recently, Dave's business expansion has included additional mobile and server-side platforms as well as support services. This has led to rebranding his company as "Torchlight Apps" (http://www.torchlightapps.com).

Dave is also a moderator and active participant on the cocos2d-iphone.org forums under the username clarus when he's not busy with his wife raising three children, three dogs, three parakeets, four ducks, and seven ducklings at last count.

Marcio Valenzuela P is a biochemist who has studied programming as a hobby for over 12 years. He is perseverant, auto-didactic, and is always looking into the latest technologies. Marcio started by picking up ASP back in the early 1990s as Chief Web Developer for a consulting company that developed web applications for private companies. He also delved into PHP applications with a MySQL database backend. Then in 2008 he started his path down iOS and has had experience developing applications and games for the platform. His experience is mostly in business applications where there exists a cloud-based web service to interact with and more recently in games created in cocos2d.

Marcio is cofounder of Activasolutions.com and currently runs a small iOS project called Santiapps.com, which programs for companies wishing to enter the iOS platform. Marcio is a forum moderator at RayWenderlich.com.