The magnetostrictive method of ultrasonic flaw detection has certain advantages: the ability to inspect objects with complex geometry, the ability to inspect objects with dry contact of the transducer with the object, the ability to inspect objects at high temperatures and in conditions of difficult access to the controlled area, etc. The peculiarities of ultrasonic wave generation by magnetostrictive transducers and their propagation in the controlled objects determine the low level of signal-to-noise ratio, which limits the practical application of this method. The aim of this work is to improve the existing system of ultrasonic nondestructive testing with small-aperture magnetostrictive transducers by developing application software for automating the control process and processing the results. As a platform for implementing calculation algorithms in the form of application software, the LabVIEW graphical programming environment of National Instruments was chosen. This environment allows implementing calculation algorithms in the form of flowcharts, where the stages of algorithm execution are implemented in the form of blocks (components) using graphic icons. Also, the LabVIEW environment contains widgets for implementing the graphical user interface. These widgets are data sources for computational algorithms, as well as sources of control signals that determine the sequence of operations. The practical implementation of the above points was carried out in the form of application software. The software is an important component of the non-destructive testing system because it allows to automate the processes of performing numerical calculations of the measured data. Ease of use of the software is achieved due to the developed user interface. In addition, the software allows you to implement the specified calculation algorithms for analyzing the measured data and visualizing the sent and received impulse signals.