Today's smartphones and tablets offer computing capabilities and storage attractiveness, which allow a variety of mobile applications with great functionality. Integrating new interfaces opens up new opportunities for new applications. These applications require storage and processing of data on smartphones. This article presents the design and implementation of an application, which aims at keeping records of actual working time of forestry machinery. The application was programmed in Eclipse under the application programming interface for Android, following the methodology proposed by IUFRO. The application allows users to measure performance over time and forestry machinery wishing to incorporate into their records, and also enables users to manipulate databases, performing statistical analyses after the requirements of stakeholders. The application on Android smartphones shows that it can bring the benefits Foresters through the digital recording of data for a timely and effective forest management.