The thesis deals with the agile software development. In thesis we first describe traditional and agile methodologies for software development with emphasis on Scrum methodology. Then two main chapters follow. First of them describes how to use Scrum methodology on a real project for reservation of sport hall. In accordance with the Scum guidelines user stories were formed and estimated. Estimation was made by using planning poker and team estimation game methods. Within chapter used technology for implementing application is described. In the second chapter we analyse accuracy of all estimations based on methods planning poker, team estimation game and actual spent time for implementing user stories. At the end we review the problems and their solutions, which were encountered during implementation.