The use of portable applications in the primary sector is undoubtedly an innovation that offers a truly important tool that helps farmers to utilize their farms and an approach to enhance agricultural entrepreneurship systematically and effectively. The chapter examined 10 agribusiness in the region of Western Greece and their owners were asked to manage their farms with the help of a “farm management” application for a period of 4-6 months. This case study focuses on assessment of mobile application usability. It examines the matter of evaluating the usability of mobile applications and is mainly aimed at evaluating a “proposal” to systematically record the technical and financial data of a farm using a farm management system. The results show that users find that the most important feature of mobile applications is the ease of use and utility.