This document provides an overview and analysis of the mobile applications market and opportunities for investment. It discusses recent trends driving growth in mobile apps like open platforms and payment systems. The market size for smartphones and apps is growing rapidly. While many apps are downloaded, retention and monetization rates are still low. The document evaluates business models and investments in different app categories. It also provides considerations for making successful investments in mobile apps, focusing on social, entertainment, and viral features. In the last section, it introduces the investment firm b-to-v and their approach to investing in startups.