Eugene Mozharovsky began his journey in computer science in 2010 with a school course on programming in Pascal. Then he explored Java himself, and it was a whole new world of object-oriented programming, a full-featured API, and powerful client-server techniques for him. In 2013, he switched to Mac OS and discovered his true passion in developing applications for Apple mobile devices. In summer 2014, Eugene fell in love with Swift and iOS 8 beta. He is currently working on a handy social app for students. When he isn't writing code, he tries to systematize physics for his own understanding of how the universe works, or to train his parrots.

Alexey Smirnov works as a software engineer in a small start-up called iRONYUN (http://ironyun.com). In his spare time, he enjoys building iOS apps using Objective-C and Swift. He obtained his master's degree in computer science from Stony Brook University, USA.

Sumit Tiwari is an avid programmer and computer enthusiast who has been obsessed with efficiently instructing machines since his early years. He has several years of experience in low-level programming with C and C++, and substantial skills with Java, Python, Ruby, MATLAB, and Verilog, among others. Sumit holds a BE in electronics and telecommunications from the University of Mumbai, where he passed with distinction. He also has a master's degree in electrical engineering from the State University of New York at Stony Brook, where he graduated by coming top in his class. He is presently working as a hardware engineer in the gorgeous Silicon Valley. A self-proclaimed philomath, Sumit is always on the lookout for new technologies to learn.