There is also free software alternative known as Vigilante[0]. I havn't looked closely at this "Anti Stalker", but I assume it also requires usage and overlay

There is also free software alternative known as Vigilante[0]. I havn't looked closely at this "Anti Stalker", but I assume it also requires usage and overlay permissions which I would give to no non-free application. [0]https://f-droid.org/packages/com.crazylegend.vigilante/ https://f-droid.org/packages/com.crazylegend.vigilante/