Mic Visualizer Free is a free Android app developed by Simernes Apps under the lifestyle category. It allows you to visualize the sounds around you through a signal to graphics converter. You can play music and see the waves or observe how the sound behaves around you.

The app is simple to use, and you can even put it in front of your mouth and pretend to be a robot. Moreover, you can sing a clear tone to make the signal stop vibrating. The graphics are visually appealing and easy to understand. However, the app lacks features like recording and sharing the visualization, which could have made it more interesting.

Overall, Mic Visualizer Free is a fun app to play with and can give you a new perspective on the sounds around you. However, it is limited in features and may not be suitable for professional use.