This document discusses the different types of apps available for smartphones and tablets. It outlines categories such as games, entertainment, lifestyle, education, social, travel, and sports. Game apps are meant for entertainment or passing time and are played through touchscreens in genres like shooters, puzzles, role-playing games, and scrollers. Entertainment apps include videos, music, and camera filters, while social apps allow connecting with friends and sharing photos/videos on platforms like Facebook, Twitter, and Myspace.