The article is devoted to the construction of concept models of information application. Such models shall be used as the basis for the construction of mathematical models of information application. Human or actor (agent) activity considered for application of information. Role of information in human activity and role of information application for the activity considered. As a result, it is shown that such models currently have insufficient quantity and quality. As an example of such a situation, Robert Solow’s paradox persistence and its latest manifestations are considered, and existing information quality principles are discussed. It is shown that to overcome the gap between the required models and the available ones, the complex of mathematical models of information application shall be proposed. Suggested results made it possible to model information application for activity with mathematical models and methods. Some kinds of application of information cases are discussed on the basis of the proposed concepts and schemas. The information application is introduced as a sequence of information applications for activity problems and to make decisions in practice.