In simplest terms. AFWall + Unlocker = AFWall This is a unlocker for AFWall+ version to use donate features. You need to have AFWall+ version to use it with unlocker. AFWall+ Free - Free version of AFWall. AFWall+ Donate - Donate version of AFWall. AFWall+ Unlocker - Unlock donate features in AFWall+ Free version.