The first edition of this non-commercial free book has been published in 2009 by the German app development agency Enough Software. The latest 15th edition has been launched in March 2015. It provides an overview on the different mobile technologies and platforms for developers and decision-makers on more than 270 pages.Learn how to enter the app business and how to do your first steps as a developer for iOS, Android, BlackBerry, Firefox OS, Java ME or Windows smartphones and tablet...