My system lists TreeSize Free as an installed application, but I can not remember to have it installed.
We are not aware of any application or software collection, which would install TreeSize Free as 3rd party software without asking. Should you notice such an application, please let us know, so we can investigate the situation.
TreeSize Free does not include any adware and remains completely inactive while not running. You can uninstall and remove TreeSize Free completely using the Windows Control Panel.