From the economic point of view it is extremely important for wood sellers and buyers to estimate the volume of harvested wood - product as precisely as possible. While new methods of wood measurements emerge on market they are often labour-consuming, impractical in field work or very expensive. Additionally, these innovations do not enjoy confidence of forest workers. That is why traditional, manual measurements are still the most common way to measure laying timber. However, in recent years numbers of smartphone mobile applications that allow to measure timber volume were developed. They are easy and quick to use and can be installed on affordable smartphone devices. While software producers promise high accuracy of the measurements there are still very little works that would test and bear that thesis. This work examines the accuracy of one of the mobile applications for measuring the volume of stacked wood and compares its accuracy with the manual method used in economic practice in Poland.