Income. First, the number of potential consumers who can be reached. A central aspect of the three previously mentionned trends is the fact that they increase the number of potential consumers through a mechanism such as lower prices, increase of usability, and better service. A higher number of consumers has the consequence of making the platform more appealing for developers, which will produce consequently more applications, which will make the platform more attractive for consumers. This creates a positive feedback loop, also called two sided network effects [14, 11]. Over the last year Apple has exhibited the strongest increase in consumers and mobile application developers, whereas Nokia still has the largest pool of potential consumers but fails to attract developers. Even though Apple is behind in the total number of consumers, it has the advantage of providing a centralized portal which facilitates consumer access.