Help Which teethering app works well

[pectin232]

to teether a laptop? If I teether it will ATT charge me... as the phone has a portable thing which makes it into a HotSpot or I should not use that and try others?? Or do I need to Root it [like iPhone] so that ATT does not detect the teethering?

 

[fldude99]

Root and freeze tethering manager with tibu