The number of mobile applications are increasing extremely fast, with more than 1000 new applications released every day. There are about 1.2 million available applications on both App Store and Google Play, which makes the market highly competitive. Developers struggle to not let their applications drown in the vast amount of other applications available, and a lot of time and money are invested to prevent this for happening. This book provides guidelines on the most important factors related to develop applications, utilize marketing channels, and apply the most efficient monetization method. The book takes the reader through a various of approaches on how to encounter the challenges which may appear, and ways to increase applications’ popularity, and thus their revenue stream. Some of the topics highlighted are network externalities, Word of Mouth, and the psychology inside applications. The work is based on research as well as an in-depth analysis on a self-developed application, from start to end. The content is gathered from the thesis written by Thomas Tveten which was given the grade A, and according to the censors “one of the best master thesis seen at the department"