To start, there are no truly "free" and/or "open source" alternatives to Wavelet and Poweramp EQ. After using both of those apps, among various other EQ apps, significant shortcomings were found in terms of the features and accessibility they offer.

The development of this app began with the goal of having both a powerful parametric EQ function and minimal permissions. This is why both the DynamicsProcessing and Visualizer APIs are used as the framework for the app, as only minimal permissions