Jayant C Varma is an Australian author, developer, and trainer who has gained experience from several other countries. He is the author of Learn Lua for iOS Game Development and is the founder of OZ Apps, a development consultancy specializing in mobile development. He has managed the IT operations for BMW dealerships since the mid 90s and has been an adopter of new technologies. He has also been an academic with James Cook University, and is actively involved in training and conducting workshops with AUC and ACS. He has previously created a text-based adventure game engine which was used in Z-Day Survival Simulator for Mongadillo Studios. He has been a reviewer for Packt Publishing on numerous iOS-related books and technologies including iOS development, such as MonoTouch Cookbook, Corona SDK Mobile Game Development, and Instant New iPad Features in iOS 6 How-to.

Dave Jewell has been working with microprocessors since you could count Bill Gates' bank balance. He has developed apps for Windows 1.0 (and still wakes up screaming!), the original 128K Apple Mac, and many other refugees from the science museum. Current interests include cross-platform mobile app development, CMS systems, and designing of programming languages and compilers. He is currently working as a freelance software developer, specializing in the creation of bespoke apps for iOS and Android. In the past, Dave has written thousands of technical articles as a contributing editor, and is a regular writer for many programming magazines including Program Now, .EXE, Delphi Magazine, Developer's Review, PC Plus, and PC Answers. He has also authored and co-authored a number of books including Instant Delphi (Wrox Press) and Polishing Windows (Addison-Wesley). Most of his books are now, like their author, long past their sell-by date.