Sound Oscilloscope is a free Android application developed by BOLDEN that offers a simple oscilloscope function of the spectrum analyzer. The program uses the microphone input of the device to analyze the audio signals and determine their spectrum. With this program, users can compare the level of noise in different areas or from different sources, and also examine the form and spectrum of individual sections of the signal in greater detail.

The program comes with a pause mode that allows users to take a picture of the signal and analyze it in detail. The spectrum of the signal is determined using FFT, which ensures accuracy and reliability. Overall, Sound Oscilloscope is a handy tool for anyone who needs to analyze audio signals on the go, and it is easy to use even for beginners.