Decibel Sound Level Meter (SLM) by Bicasoft Technologies is a free Android app designed to measure the amplitude of audio in real-time. This app uses the device's microphone to capture sound pressure levels and display it on an analog meter with large fonts, making it easy to read. With its data chart scope, users can drag the graphic to analyze past data and pinch and zoom to display data more precisely.

One of the best features of this app is its ability to adjust the frequency of samples from 1 to 10Hz. Additionally, users can adjust calibration using a slider. Decibel Sound Level Meter also displays maximum and minimum peak levels, making it a great tool for audio professionals, musicians, and anyone who needs to measure sound levels accurately. The app also has a screen always-on feature, making it easy to monitor sound levels for extended periods of time.