A free program for Android, by Vuche Labs.
If you are looking for an app that visualizes and analyzes sound, the Advanced Spectrum Analyzer PRO app is the most suitable app for you to download and install on your phone or tablet.
Advanced Spectrum Analyzer PRO is an application that is very helpful for students and people who are conducting studies regarding sound in general. The app visualizes and analyzes the sound through the built-in microphone of your Android phone. When the sound travels, the app takes in the frequency and forecasts a graph.
Download and install this game so you can finally conduct your research without needing high-caliber equipment.