The addon is designed to simplify the control of the number of different types of polygons. You can see how many Gone, Quad and Tris are on the active object. You can also quickly select them by clicking on the corresponding button.
You should know that you can get this addon for free by downloading it from the link https://gum.co/polysource.
Or you can support me by buying it here.
If you like the addon and you want to offer an improvement , add to channel for discussion https://discord.gg/SBEDbmK . I will be glad to improve your experience and use).