Nowadays, technology’s penetration into the population is increasing dramatically day after day. As humanity is taking big steps forward towards breakthrough innovative technologies, the same time it is more affordable than ever for a person to purchase cutting edge technological devices. Specifically, smartphones and tablets are widely available in all price ranges that someone is willing to invest. Along with smart mobile devices, their software started to develop rapidly too. Year after year, operating systems are growing stronger more efficient kai more flexible to meet the increasable needs of customers. Eventually developers started developing applications for mobile handheld devices of which popularity started growing. Soon, Educational experts started experimenting with the use of mobile applications in order to add value to their courses depending on their needs. As technology was proving its value inside the educational field, the pool of applications that where targeting education, started to increase. At this point a new need started to arise. As it occurred in the past with learning objects, the need to be able to identify fast and efficient whether an application was matching the needs of teachers or students came up. Therefore separate groups of applications have been created in mobile applications markets trying to group mobile applications intended to be used in education. Although, still the ways of search and retrieval were having few differences from the way any other application was being retrieved. The scope of this thesis is to present and propose a new metadata model that would be used to describe sufficiently mobile applications that have been characterized as educational. This metadata model will be used to implement a guided search on a custom Android applications market that would be called Ask4Apps. The purpose of the thesis is to add an extra arrow to the quiver of educational experts and students that are looking for ways to search, identify the value, and retrieve meaningful and useful educational applications.